ORIGINAL_ARTICLE
Response of different species of Brassica to water deficit
Development of drought-tolerant cultivars is hampered by a lack of effective selectioncriteria. In this research, response of 36 genotypes of rapeseed from seven species of Brassicaincluding B. napus, B. rapa, B. juncea, B. carinata, B. oleracea, B. nigra and B. fruticulosa wasassessed under three moisture levels (no stress, mild stress and intense stress) in the field during2011-2012. Five drought-tolerance indices were calculated: stress tolerance (TOL), stresssusceptibility index (SSI), mean productivity (MP), geometric mean productivity (GMP) andstress tolerance index (STI). Increasing water stress levels caused significantly more reductionsin the seed yield of all species. Species B. napus had the highest yields in normal and intensestress conditions while B. carinata showed better performance in mild stress condition.Correlation coefficients revealed that among drought tolerance indices, GMP, STI and MP aresuperior criteria for selecting high-yield genotypes under stress and non-stress conditions.B. napus and B. carinata were the most drought tolerant while B. rapa and B. oleracea were themost susceptible species of Brassica based on yield potential. Application of principlecomponent analysis (PCA) for distinguishing drought and susceptible species are discussed.
https://ijpp.gau.ac.ir/article_3306_4a4e6738586e506630cdab5caee99383.pdf
2017-01-01
1
16
10.22069/ijpp.2017.3306
Brassica
soil moisture
Drought tolerance
principle component analysis
F.
Rashidi
1
MSc of Plant Breeding, Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan, 84156-8311, Iran.
AUTHOR
mohammad mahdi
majidi
majidi@cc.iut.ac.ir
2
Isfahan University of Technology
LEAD_AUTHOR
M.
Pirboveiry
3
MSc student of Plant Breeding, Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan, 84156-8311, Iran.
AUTHOR
ORIGINAL_ARTICLE
Sowing time and irrigation scheduling effects on seed yield and fatty acids profile of sunflower in semi-arid climate
A research was conducted in Southern Italy to study the changes in seed yield, oil content andfatty acids composition, in response to irrigation at different stages of growing season (at sowing,Dry; from sowing to beginning of flowering, S-BF; from visible bud to 75% flowering, VB-FF;from beginning of flowering to seed ripening, BF-M; from sowing to seed ripening, Full), in astandard sunflower hybrid sown at normal (April) and late (June) time. High seed yield and oilcontent combination resulted in the significantly greatest oil yield in ‘Full’ water regime. MUFAs(mostly oleic acid) were higher in late sowing and they benefit from good soil water availabilityof ‘Full’ regime. Contrastingly, PUFAs (i.e. linoleic acid content), higher in late season, wasdepressed by good soil availability during the early growing season (S-BF and S-M regimes).Irrigation at critical stages (i.e. flowering) may alleviate the negative impact of water stress uponcrop productivity and oil fatty acids composition, resulting in yield and oil quality benefitsbesides a water saving. Late sowings allow cultivating sunflower as a catch crop, with anincreased economic and environmental sustainability of Mediterranean farming systems.
https://ijpp.gau.ac.ir/article_3307_ec848fb70c14de997dcd07fbd84bc5a2.pdf
2017-01-01
17
32
10.22069/ijpp.2017.3307
Helianthus annuus L
Sowing time
Deficit irrigation
C.
Patanè
cristinamaria.patane@cnr.it
1
CNR-Istituto per la Valorizzazione del Legno e delle Specie Arboree (IVALSA), UOS di Catania, Via P. Gaifami 18, 95126 Catania (Italy).
LEAD_AUTHOR
S.L.
Cosentino
2
Dipartimento di Agricoltura, Alimentazione e Ambiente (Di3A), Università degli Studi di Catania, Via Valdisavoia 5, 95123 Catania (Italy)
AUTHOR
U.
Anastasi
3
Dipartimento di Agricoltura, Alimentazione e Ambiente (Di3A), Università degli Studi di Catania, Via Valdisavoia 5, 95123 Catania (Italy)
AUTHOR
ORIGINAL_ARTICLE
The effect of water deficiency and salinity on the growth and quality of fresh dill (Anethum graveolens L.) during autumn and spring cultivation
The aim of this experiment was to determine the response of dill (Anethum graveolens L.) towater deficiency and salinity. In spring, dill biomass decreased with increasing water deficiencydue to a reduction in the number and mean weight of leaves per plant. The concentrations ofchlorophyll, carotenoids, vitamin C and total phenolics within the leaves were unaffected bywater stress, but the Cl, Na and K content decreased. Salinity had no effect on plant growth inthe spring, except at the highest level (8 dS/m-1), where a decrease in biomass occurred. Thechlorophyll and total phenolics content of leaves rose in the autumn with increasing salinity,whereas vitamin C and carotenoids were unaffected. In spring, increasing salinity causedfluctuations in the chlorophyll and vitamin C content of the leaves and a decrease in totalphenolics. The concentrations of chlorophyll and antioxidants were higher in spring than inautumn at all levels of salinity. The essential oil content was also higher in the spring than in theautumn, irrespective of salinity. A relative decrease in dill ether within the herb oil underincreasing salinity was compensated for by an increase in α-phellandrene. In the flower oil,increasing salinity caused a decrease in the relative concentrations of both α-phellandrene anddill ether, which was compensated for by an increase in carvone. Overall, dill appears moreresistant to salinity than to water stress, but the season of cultivation has the most importanteffect on both yield and quality.
https://ijpp.gau.ac.ir/article_3308_14585acfd83b7b0294b887c1049875ff.pdf
2017-01-01
33
46
10.22069/ijpp.2017.3308
Biomass
chlorophyll
Carotenoids
Vitamin C
Phenolics
D.
Tsamaidi
1
Agricultural University of Athens, Laboratory of Vegetable Production, Iera Odos 75, 11855 Athens, Greece
AUTHOR
D.
Daferera
2
Agricultural University of Athens, Laboratory of Vegetable Production, Iera Odos 75, 11855 Athens, Greece
AUTHOR
I.C.
Karapanos
3
Agricultural University of Athens, Laboratory of Vegetable Production, Iera Odos 75, 11855 Athens, Greece
AUTHOR
H.C.
Passam
passam@aua.gr
4
Agricultural University of Athens, Laboratory of Vegetable Production, Iera Odos 75, 11855 Athens, Greece
LEAD_AUTHOR
ORIGINAL_ARTICLE
The Impact of Climate Change on Yield Potential of Maize across China
Maize is one of the major crops in China and its yield potential has been changedsignificantly by climate change induction during last five decades. The national policy of maizeproduction sufficiency emphasizes the necessity for a more accurate estimation of yieldpotential of maize at a national level. In this paper yield potential of maize was calculated usingthe Global Agro-Ecological Zones (GAEZ) model and key meteorological factors impact onyield potential across China was also analyzed. The results shows that, total yield potential ofmaize increased by 0.15 million tons/year during the past five decades due to an increase incultivated area as a result of climate change impact. The partial correlation analysis betweenmain meteorological factors and yield potential of maize at a county level showed that 47% ofthe counties of China were predominately influenced by changes in solar radiation while 16% ofcounties were predominately affected by temperature changes. In addition, each agriculturalzone showed clear spatial difference in the distribution of key impact factors. These researchfindings will not only provide scientific basis for making good use of meteorological resourcesunder climate change, but also play a vital role for the management of national maizeproduction for food security.
https://ijpp.gau.ac.ir/article_3309_c251aa86bb75e730a03850061038f0f3.pdf
2017-01-01
47
63
10.22069/ijpp.2017.3309
Climate Change
maize
Yield potential
GAEZ model
Maize production
Cropping pattern
X.
Xu
1
State Key Laboratory of Resources and Environmental Information Systems, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
AUTHOR
L.
Wang
2
State Key Laboratory of Resources and Environmental Information Systems, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
AUTHOR
D.
Sun
daowei.sun@adelaide.edu.au
3
The University of Adelaide Business School, Adelaide, Australia.
LEAD_AUTHOR
L.
Liu
4
State Key Laboratory of Resources and Environmental Information Systems, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
AUTHOR
K.E.
Banson
5
The University of Adelaide Business School, Adelaide, Australia.
AUTHOR
ORIGINAL_ARTICLE
Economic and environmental impacts of introducing grain legumes in farming systems of Midi-Pyrenees region (France): A simulation approach
The reconciliation of economy and environment is a key factor in achieving sustainability.The European Union wishes to achieve the sustainability of its agriculture in order to producehigh quality food materials and to manage energy crisis and the risks related to climate andmarket fluctuations. These risks can be mitigated by reducing negative impacts of agriculturalactivities on the environment. Therefore, this study was designed to derive and promote thepotential tools to increase the land area under grain legumes in Midi-Pyrenees region (France)where it currently stands at only 1 to 3%. For this purpose modeling chain APES-FSSIMIndicator was used to assess different alternative scenarios of proposition of new grain legumesbased cereals rotations, provision of higher premium on grain legumes, increase in sale priceand yield of grain legumes, reduction in price and yield variability of grain legumes andcombination of all these scenarios. Results showed that alternative scenario of provision of morepremiums on grain legumes was more efficient in increasing the grain legume area than otheralternative scenarios, but this would require a level of subsidies much higher than the currentcrop-specific subsidies in EU. However, in case of combination of all these scenarios, theincrease in grain legumes area was maximum for all three selected farms from the study area.In addition farm income was increased by 11 to 26% and energy consumption was decreased by4 to 9% for the selected farms. It is concluded that grain legumes area in Midi-Pyrenees farmingsystems can be increased by following the above mentioned alternative strategies
https://ijpp.gau.ac.ir/article_3310_51045a763d923f8b5a2775af4a6ac8a8.pdf
2017-01-01
65
87
10.22069/ijpp.2017.3310
Alternative scenarios
Cropping systems
Crop model
Bio-economic model
Sustainability indicators
F.
Mahmood
fslagronomy@hotmail.com
1
Department of Environmental Sciences and Engineering, Government College University, Faisalabad-38000, Pakistan
LEAD_AUTHOR
H.
Belhouchette
2
CIHEAM-Institute Agronomique Mediterraneen de Montpellier (IAMM), Montpellier-34090, France.
AUTHOR
W.
Nasim
3
CIHEAM-Institute Agronomique Mediterraneen de Montpellier (IAMM), Montpellier-34090, France.
AUTHOR
T.
Shahzad
4
Department of Environmental Sciences and Engineering, Government College University, Faisalabad-38000, Pakistan
AUTHOR
S.
Hussain
5
Department of Environmental Sciences and Engineering, Government College University, Faisalabad-38000, Pakistan
AUTHOR
O.
Therond
6
INRA - UMR 1248 Agir, F-31320 Castanet Tolosan, France.
AUTHOR
S.
Fahad
7
College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
AUTHOR
S.
Refat Sultana
8
Department of Environmental Sciences, COMSATS Institute of Information Technology (CIIT), Vehari-61100, Pakistan.
AUTHOR
J.
Wery
9
SupAgro Montpellier UMR-System, Bat. 27, 2 Place Viala, Montpellier-34060, France
AUTHOR
ORIGINAL_ARTICLE
Stimulated fine root growth benefits maize nutrient uptake under optimized nitrogen management
Optimized nitrogen (N) management reduces total N application without sacrificing cropyield. However, the underlining mechanisms have not been well investigated, especially lackingthe evidence from roots. Here we performed a two-year field experiment with maize grownunder zero-N, conventional N and optimized N applications and examined grain yield, N,phosphorous (P) and potassium (K) uptake and root length in diverse diameter classes. Resultsshowed that both conventional N and optimized N managements significantly increased plantnutrient contents and grain yield compared with zero-N treatment, but no obvious differencewas observed between the two N-fertilized treatments. Notably, the response of differentnutrients to N application was not synchronous temporally over the growth period, followingthe order of N first, P second and K last. Though N application generally had minor impact ontotal root length and root biomass, optimized N regime significantly increased fine root(diameter ≤ 0.2 mm) length compared with conventional N at the eighth leaf emerged stage. Thestimulated fine root growth under optimized N management is beneficial for adequate N uptakeduring the key growth stage, which determines subsequent PK acquisition and final crop yield.Our findings highlight the importance of fine roots in maize NPK uptake and a betterunderstanding of the response of fine roots to changes in N availability may therefore be criticalfor optimizing N input in maize farming system
https://ijpp.gau.ac.ir/article_3311_a3df68be79776431988450103a7f4ddc.pdf
2017-01-01
89
100
10.22069/ijpp.2017.3311
Root length
Phosphorous (P)
Potassium (K)
Leaf area
Grain yield
Zea mays L
X.
Zeng
1
Institute of Protected Agriculture, Chinese Academy of Agricultural Engineering, Beijing 100125, China
AUTHOR
Y.
Peng
pengyf@ibcas.ac.cn
2
Key Laboratory of Plant-Soil Interactions, MOE, Center for Resources, Environment and Food Security, College of Resources and Environmental Science, China Agricultural University, Beijing 100193, China.
LEAD_AUTHOR
ORIGINAL_ARTICLE
Evaluation of grain sorghum (Sorghum bicolor L.) lines/cultivars under salinity stress using tolerance indices
Selecting and cultivating the crops/varieties that can tolerate water salinity is potentially animportant strategy to save fresh water resources and maximize the crop yield in salt affected areas.To evaluate the responses of 36 sorghum lines and cultivars to salinity stress, two fieldexperiments were conducted in non-stress (EC=2 dS/m) and salinity stress conditions (EC=12dS/m) using randomized complete block design with three replications. The field experimentswere carried out at research station of Agricultural Research Center and Natural Resources ofYazd, Iran in 2014 and 2015 growing seasons. Under salinity stress conditions, grains/panicle,panicle length, 1000 grain weight, grain yield, biological yield and harvest index were decreased36%, 15%, 42%, 64%, 40% and 39%, respectively. The highest grain yield under non-stressconditions was produced by KDFGS2 (8182.6 kg/ha) while the highest grain yield under salinitystress conditions was achieved by KDFGS6 (3310 kg/ha). Correlation coefficients between grainyield (for both conditions) and tolerance indices showed that geometric mean productivity (GMP),stress tolerance index (STI) and harmonic mean (HAM) indices were appropriate for screeninghigh-yielding genotypes. Principal component analysis validated the results of screening methodsand introduced lines number 1, 7 and 9 as superior genotypes under both conditions. Lines number2, 8, 15, 19, 29 and cultivars Ghalami-Herat, Sepideh and Kimia showed greater sensitivity tosalinity stress. Since lines number 4, 6, 10 and 24 had greater yield stability, it appears that theymay worth further explorations in future breeding projects.
https://ijpp.gau.ac.ir/article_3312_a9fd84a0e96eba8e0419fb3063880f40.pdf
2017-01-01
101
115
10.22069/ijpp.2017.3312
Principal component analysis
Sorghum
Tolerance indices
E.
Shakeri
1
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz Iran.
AUTHOR
Yahya
Emam
yaemam@shirazu.ac.ir
2
Dep of Agronomy and Plant Breeding, Shiraz University
LEAD_AUTHOR
S.A.
Tabatabaei
3
Associate Professor, Seed and Plant Improvement Research Department, Yazd Agricultural and Natural Resources and Education Center, AREEO, Yazd , Iran.
AUTHOR
A.R.
Sepaskhah
sepas@shimzu.ac.ir
4
Department of Water Engineering, College of Agriculture, Shiraz University, Shiraz, Iran.
AUTHOR
ORIGINAL_ARTICLE
Farmers' perceptions on improved bread wheat varieties and formal seed supply in Ethiopia
The paper presents smallholder farmers' perceptions on attributes of bread wheat varietiesbased on primary data collected from 524 households in four major wheat growing areas ofEthiopia. The results indicated high value of attainment indices for improved varieties comparedto landraces, which shows how the demanded attributes are embodied more in improved ones.Grain yield and yellow and stem rust resistance are attributes that are desired most compared toothers. However, there is high variability in attainment indices among improved varieties for thedifferent attributes, which suggests the need to target varieties for the different environmentsincluding disease and drought tolerance. The results also showed inconsistency between thevalue of attainment indices of varieties and the amount of seed supplied by the formal sector,which resulted in mismatch between demand and supply leading to considerable carryover seed.The formal sector needs to consider diversifying its bread wheat varietal portfolio and increaseits capacity for seed supply to respond to emerging challenges and effectively address farmers’preferences.
https://ijpp.gau.ac.ir/article_3313_54cf9ba75807b287b49ce17156a8df5d.pdf
2017-01-01
117
130
10.22069/ijpp.2017.3313
Attainment indices
Farmers’ perception
Formal seed system
Varietal attributes
Wheat
Z.
Bishaw
z.bishaw@cgiar.org
1
Seed Section, ICARDA, P.O. Box 5466, Aleppo, Syria.
LEAD_AUTHOR
D.
Alemu
2
EIAR, Addis Abeba, Ethiopia
AUTHOR
ORIGINAL_ARTICLE
Long-term tillage and residue management effect on soil compaction and nitrate leaching in a Typic Haploxerert soil
A field experiment was conducted to compare the effects of long-term tillage and cropresidue management on some physical properties and nitrate leaching of a Typic Haploxerertsoil under winter wheat (Triticum vulgare L.)-soybean (Glycine max L.) double-croppingsystem. The tillage systems consisted of conventional tillage with stubble (CT1), conventionaltillage with stubbles burned (CT2), heavy disc harrow reduced tillage (RT1), rototiller reducedtillage (RT2), reduced tillage with heavy tandem disc harrow fallowed by no-tillage (RNT) andno-till (NT). Each tillage method applied at 480 m2 plot and replicated three times in randomlydistributed plots. In the experiment, organic matter content (OM), aggregate stability (AS),penetration resistance (PR), porosity, bulk density (BD) in 0-15 cm and 15-30 cm depth andnitrate concentrations at 90 cm depth were determined. Tillage practices significantly affectedthe measured properties at both soil depths. The BD and PR within the conservational managedplots were higher than under conventional managed plot. Whereas, OM content and AS weresignificantly greater under conservational managed plots, indicating improved soil quality.Soybean yield was not affected by tillage practices. The concentrations of NO3-N leached hadstrong variation within sampling dates and significantly different among treatments after thefirst and the third irrigation (P˂0.01). The highest average NO3-N (1440.8b±74.9 mg L-1) inleachate was measured in the CT2 plot while the lowest value (774.8a±56.5 mg L-1) wasobtained in the RT1 plot. The results of this study revealed that reduced tillage and no-tilltreatments could significantly improve soil physical quality and reduce NO3-N leaching ofTypic Haploxerert soil in the Çukurova Region
https://ijpp.gau.ac.ir/article_3314_b66bc42cbc4677abbe89d9b3e09a4fc0.pdf
2017-01-01
131
149
10.22069/ijpp.2017.3314
Mediterranean
Conventional
Conservative
No-till
Compaction
Nitrate leaching
I.
Celik
icelik@cu.edu.tr
1
Cukurova University, Faculty of Agriculture, Department of Soil Science and Plant Nutrition, Adana, Turkey.
LEAD_AUTHOR
H.
Günal
2
Gaziosmanpaşa University, Faculty of Agriculture, Department of Soil Science and Plant Nutrition. Tokat, Turkey.
AUTHOR
M.
Acar
3
Cukurova University, Faculty of Agriculture, Department of Soil Science and Plant Nutrition, Adana, Turkey.
AUTHOR
M.
Gök
4
Cukurova University, Faculty of Agriculture, Department of Soil Science and Plant Nutrition, Adana, Turkey.
AUTHOR
Z.
Bereket Barut
5
Cukurova University, Faculty of Agriculture, Department of Agricultural Machinery and Technologies Engineering, 01330 Adana, Turkey.
AUTHOR
H.
Pamiralan
6
Cukurova University, Faculty of Agriculture, Department of Soil Science and Plant Nutrition, Adana, Turkey.
AUTHOR
ORIGINAL_ARTICLE
Climate change would enlarge suitable planting areas of sugarcanes in China
China’s sugar production and consumption continues to increase. This process is alreadyongoing for over 15 years and over 90% of the sugar production comes from sugarcane(Saccharum officinarum). Most of the sugarcane is planted in the south (e.g. the Chineseprovinces of Yunnan, Guangxi, Guangdong and Hainan) and it represents there a majoreconomic crop in these landscapes. As found virtually worldwide, climate change is generallyexpected to influence such suitable planting areas. Here we started a first empirical assessmenthow climate change would influence the spatial distribution of those current and future suitableplanting areas of this strategic crop in China. We employed an ensemble machine learningalgorithm (Random Forest; bagging) and increasingly used and robust species distributionmodels (SDMs). These are based on our compiled and best publicly available crop data sampledfrom the Chinese sugarcane industry map. They were linked with bioclimate variables fromthe Worldclim database. This powerful concept allowed us to project sugarcane’s current andfuture (2070) suitable distributions based on the climate niche. Our results were extrapolated tothree Global Circulation Models (GCMs; BCC-CSM1-1, CNRM-CM5 and MIROC-ESM)under three representative concentration pathways (RCPs of 2.6, 4.5 and 8.5). The evaluationsof these models indicated that our results had a powerful performance (AUC=0.97, TSS=0.96)for robust inference. Bioclimatic variables related to temperature were the most importantpredictors for sugarcane planting. All models showed similar increasing spatial trends insuitable distribution area and just a few original suitable areas would be lost. Our finding putsemphasize on new growing areas, their soil and management. It is the first to provide thenecessary background in the future to safely cultivate sugarcane in climate-suitable areas and toobtain more sugar production for farmers and the industry; it is of large and strategic importancefor food security and national autonomy of this central commodity.
https://ijpp.gau.ac.ir/article_3315_6aa492f9a465a3d20b3f52db393f8446.pdf
2017-01-01
151
165
10.22069/ijpp.2017.3315
Sugarcane
Climate Change
China
Species distribution model (SDMs)
Random forest (bagging) and machine learning
Food security
C.R.
Mi
1
Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, University of Chinese Academy of Sciences, Beijing 100101, China.
AUTHOR
Q.
Zu
2
Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, University of Chinese Academy of Sciences, Beijing 100101, China.
AUTHOR
L.
He
3
National Meteorological Center, Beijing 100081, China.
AUTHOR
F.
Huettmann
4
EWHALE Lab, Department of Biology and Wildlife, Institute of Arctic Biology, University of Alaska Fairbanks (UAF), 419 Irving I, P.O. Box 757000, Fairbanks AK 99775, USA.
AUTHOR
N.
Jin
5
State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
AUTHOR
J.
Li
lijun@igsnrr.ac.cn
6
Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, University of Chinese Academy of Sciences, Beijing 100101, China.
LEAD_AUTHOR
ORIGINAL_ARTICLE
Safflower model for simulation of growth and yield under various irrigation strategies, planting methods and nitrogen fertilization
Development and use of crop growth models is an effective tool for agricultural planningand decision making in agricultural industry. Besides, the drought and limited supplies of waterin many areas of the world has increased attention to favourable strategies in farm managementsuch as efficient irrigation and planting methods. The objective of this study was to develop acrop model for safflower known as a multi-purpose crop under various irrigation regimes,planting methods and nitrogen fertilization. The experiment was designed as split-split plot thatarranged in randomized complete blocks with irrigation strategy as the main plot, plantingmethod as the subplot and nitrogen levels as the sub-subplot in three replications. The irrigationstrategies consisted of ordinary furrow irrigation (OFI) and variable alternate furrow irrigation(VAFI) as a partial root drying (PRD) technique. The planting methods were on-ridge planting(P1) and in-furrow planting (P2) methods. The fertilizer levels were 0 (N0), 100 (N1) and200 (N2) kg ha-1 of urea as 0, 46 and 92 kg N ha-1. Two years of the experiment carried out in asemi-arid area from 2012 to 2014. The field data of the second year of experiment were used todevelop the model and it was validated by the data of first year. The results indicated that theproposed safflower model is able to estimate evapotranspiration, soil water content, leaf areaindex, soil surface evaporation, crop transpiration, biomass, straw and seed yield of safflower inan appropriate manner. The safflower model is useful for having better field management andreducing administrative costs with respect to the model simplicity and its briefness in data input.
https://ijpp.gau.ac.ir/article_3316_40d3bda947310b9e5439b20247b26ebe.pdf
2017-01-01
167
192
10.22069/ijpp.2017.3316
crop modeling
PRD irrigation
Alternate furrow irrigation
Leaf area index
Evapotranspiration
M.H.
Shahrokhnia
1
Irrigation Department, Shiraz University, Iran.
AUTHOR
A.R.
Sepaskhah
sepas@shirazu.ac.ir
2
Irrigation Department, Shiraz University, Shiraz, I.R. of Iran
LEAD_AUTHOR
ORIGINAL_ARTICLE
Enhancing economic water productivity under on farm reservoirs in diversified rainfed cropping systems
A long term study was done to assess the impact of on farm reservoirs (OFR) on oil seedand cereal based cropping systems with vegetables (okra, tomato and carrot) in semi-aridalfisol of southern Telangana region. Two supplemental irrigation (SI) depths (30 and 50 mm)from OFR with raingun system were studied for assessing the water productivity andprofitability of the technology in these cropping systems. Cropping system using sole cropof groundnut or maize, later was found to be more profitable (3 times) with 50 mm SI in2 critical growth stages having annualized net benefit (ANB) of $ 971 - 998 / ha andeconomic productivity (EP) of 31 Cents / m3 under different capacities of OFR (500-1500m3). In rainy season with single filling of OFR and deficit irrigation of 30 mm SI,maize+tomato was found to be more profitable (ANB: $ 1659 - 2325 / ha and EP: 37 - 51Cents / m3) as compared to sole crop or with okra. During rainy season and post-rainy seasonwith second filling of OFR at SI depth of 30 mm, maize+tomato+carrot was the mostprofitable option (ANB: $ 2544 - 3012 / ha and EP: 37 - 45 Cents/ m3) as compared to anyother combination of the crops. The study revealed that the best economical crop combinationunder deficit irrigation of 30 mm will make the rainfed agriculture more remunerative withOFR technology with efficient use of surface water.
https://ijpp.gau.ac.ir/article_3317_bb4f0907750bfbb16f8a67c28f17b6a4.pdf
2017-01-01
193
207
10.22069/ijpp.2017.3317
On farm reservoirs
Supplemental irrigation
Economic productivity
Cropping system
Rainfed agriculture
K.S.
Reddy
1963@gmail.com
1
ICAR-Central Research Institute for Dryland Agriculture, Hyderabad-500 059, India.
LEAD_AUTHOR
V.
Maruthi
2
ICAR-Central Research Institute for Dryland Agriculture, Hyderabad-500 059, India.
AUTHOR
M.
Kumar
3
ICAR-Central Research Institute for Dryland Agriculture, Hyderabad-500 059, India.
AUTHOR
P.K.
Pankaj
4
ICAR-Central Research Institute for Dryland Agriculture, Hyderabad-500 059, India.
AUTHOR
A.G.K.
Reddy
5
ICAR-Central Research Institute for Dryland Agriculture, Hyderabad-500 059, India.
AUTHOR
B.
Umesha
6
ICAR-Central Research Institute for Dryland Agriculture, Hyderabad-500 059, India.
AUTHOR