@article { author = {}, title = {info}, journal = {International Journal of Plant Production}, volume = {7}, number = {2}, pages = {0-1}, year = {2012}, publisher = {Gorgan University of Agricultural Sciences}, issn = {1735-6814}, eissn = {1735-8043}, doi = {10.22069/ijpp.2012.980}, abstract = {}, keywords = {}, url = {https://ijpp.gau.ac.ir/article_980.html}, eprint = {https://ijpp.gau.ac.ir/article_980_86c30d395ed4b7a5d51af5f49489cc9c.pdf} } @article { author = {Choudhary, V.K. and Suresh Kumar, P.}, title = {Maize production, economics and soil productivity under different organic ource of nutrients in eastern himalayan region, India}, journal = {International Journal of Plant Production}, volume = {7}, number = {2}, pages = {167-186}, year = {2012}, publisher = {Gorgan University of Agricultural Sciences}, issn = {1735-6814}, eissn = {1735-8043}, doi = {10.22069/ijpp.2012.981}, abstract = {Replenishing nutrients through organic sources is essential to maintain the soil health and sustainability in Eastern Himalayan Region, India which is organic by default. Keeping this in mind an experiment was laid out on randomized block design with six treatments viz., T1: Vermicompost (VC; 2.5 Mg ha-1), T2: Poultry manure (PM; 1.25 Mg ha-1), T3: Swine manure (SM; 3.0 Mg ha-1), T4: Cow dung manure (CDM; 10.0 Mg ha-1), T5: Farm yard manure (FYM; 10.0 Mg ha-1) and T6: control and replicated thrice to study the effect of applied organic nutrients on growth and yield attributes of maize. The physical parameters like porosity, maximum water holding capacity (MWHC), field capacity (FC), permanent wilting point (PWP), bulk density (BD) and moisture releasing pattern was measured better when the crop was supplied with FYM followed by CDM. Chemical parameters like pH, Soil organic carbon (SOC), available nitrogen (N), phosphorus (P) and potassium (K) were recorded better on VC followed by PM over control. The growth, physiological parameters, yield attributes and yield were recorded higher on VC. The uptake of nitrogen, phosphorus and potassium was higher on VC followed by PM, whereas least nutrients were taken up by control. Similarly the gross and net return was recorded higher on VC followed by PM, whereas, B: C ratio was recorded higher on PM followed by CDM. However the lowest economic returns were recorded on control. Agronomic efficiency was recorded higher on VC followed by PM. Keywords: Maize; Organic sources; Growth; Yield; Economics; Soil properties.}, keywords = {maize,Organic sources,growth,Yield,Economics,Soil properties}, url = {https://ijpp.gau.ac.ir/article_981.html}, eprint = {https://ijpp.gau.ac.ir/article_981_ebcc5188d9a16fd3414f462c136e034b.pdf} } @article { author = {Baninasab, B. and Baghbanha, M.R}, title = {Influence of salicylic acid pre-treatment on emergence and early seedling growth of cucumber (Cucumis sativus)under salt stress}, journal = {International Journal of Plant Production}, volume = {7}, number = {2}, pages = {187-206}, year = {2012}, publisher = {Gorgan University of Agricultural Sciences}, issn = {1735-6814}, eissn = {1735-8043}, doi = {10.22069/ijpp.2012.982}, abstract = {Salicylic acid (SA) is a common, plant-produced signal molecule that is responsible for inducing tolerance to a number of biotic and abiotic stresses. An experiment was therefore conducted to test whether the application of SA at various concentrations (0, 0.25, 0.50 or 1.0 mM) through a seed-soaking method would protect cucumber (Cucumis sativus L.) seedlings subjected to salt stress. After soaking, seeds were sown in plastic trays filled with washed fine sand. The trays were then placed in the greenhouse and watered with different NaCl solutions (0, 50, 100 and 150 mM), for a period of 4 weeks. SA improved the majority of physiological (relative leaf chlorophyll content, leaf relative water content and chlorophyll fluorescence ratio) and morphological parameters (total emergence, mean emergence time, shoot and root dry weights) of cucumber seedlings subjected to salt stress. SA improved the injuries caused by salt stress by promoting K+ accumulation and preventing increases in leaf electrolyte leakage and Na+ contents of leaves and roots. The best protection appeared to be obtained from SA applied by seed-soaking method at 1.00 mM.}, keywords = {Cucumber,Salt stress,Salicylic acid,2-hydroxybenzenecarboxylic acid}, url = {https://ijpp.gau.ac.ir/article_982.html}, eprint = {https://ijpp.gau.ac.ir/article_982_41335c84f46c7c0bed4a4ad585b89672.pdf} } @article { author = {Sargordi, F. and Farhadi Bansouleh, B. and Sharifi, M.A. and Van Keulen, H.}, title = {Spatio-temporal variation of wheat and silage maize water requirement using CGMS model}, journal = {International Journal of Plant Production}, volume = {7}, number = {2}, pages = {207-224}, year = {2012}, publisher = {Gorgan University of Agricultural Sciences}, issn = {1735-6814}, eissn = {1735-8043}, doi = {10.22069/ijpp.2012.983}, abstract = {The Crop Growth Monitoring System (CGMS) has been applied for spatial biophysical resource analysis of Borkhar & Meymeh district in Esfahan province, Iran. The potentially suitable area for agriculture in the district has been divided into 128 homogeneous land units in terms of soil (physical characteristics), weather and administrative unit. Crop parameters required in the WOFOST simulation model for winter wheat and silage maize, have been calibrated based on experimental data from the study area. The study area has been classified into three cropping calendar zones based on average annual temperature, altitude and latitude. For each zone, a sowing date has been defined for each crop as the starting point of crop growth simulation. Growth of these crops has been simulated for the potential situation in each land unit for 20 years of historical daily weather data. Daily potential evapotranspiration and irrigation requirements of each crop per land unit have been calculated in a postsimulation, on the basis of model outputs. Outputs of the model are crop yield (marketable yield and total biomass) and irrigation requirements per decade. Spatial and temporal variation in irrigation requirements has been analyzed. The temporal variation in crop water requirements is larger than the spati3al variation.}, keywords = {Crop growth simulation,Spatial yield analysis,Potential yield,Waterlimited yield,water requirement,CGMS,WOFOST}, url = {https://ijpp.gau.ac.ir/article_983.html}, eprint = {https://ijpp.gau.ac.ir/article_983_0fd971e269e1ee0fae0ebeaddadd39b0.pdf} } @article { author = {Pimratch, S. and Jogloy, S. and Vorasoot, N. and Toomsan, B. and Kesmala, T. and Patanothai, A. and Holbrook, C.C}, title = {Association of nitrogen fixation to water uses efficiency and yield traits of peanut}, journal = {International Journal of Plant Production}, volume = {7}, number = {2}, pages = {225-242}, year = {2012}, publisher = {Gorgan University of Agricultural Sciences}, issn = {1735-6814}, eissn = {1735-8043}, doi = {10.22069/ijpp.2012.984}, abstract = {mprovement of N2 fixation might be an effective strategy in peanut breeding for high yield under drought stress conditions. However, under water limited conditions peanut varieties having high water-use efficiency (WUE) are favorable. A pot experiment was conducted under greenhouse conditions at Khon Kaen University, Thailand during December 2002 to May 2003, and repeated during June 2003 to November 2003. Twelve peanut genotypes were tested under three water regimes to estimate the relationships between N2 fixed with biomass production, WUE and pod yield under drought stress conditions. N2 fixed biomass production; pod yield and WUE were reduced by drought stress. At 2/3 AW, Tifton-8 and KK 60-3 were the best genotypes for high N2 fixed and high WUE. ICGV 98324 and ICGV 98300 had high pod yield, whereas Tifton-8 had low pod yield. N2 fixed was positively correlated with biomass and WUE under mild drought conditions but negatively correlated with pod yield. Tifton-8 was the best genotype for N2 fixed and WUE, but it was a poor performer for pod yield under drought conditions. ICGV 98324 and ICGV 98300 had higher pod yield with lower N2 fixed and WUE than did Tifton-8. Results indicated that N2 fixed under drought conditions contributed to vegetative growth and water use efficiency rather than to pod yield. Improvement for high N2 fixed in peanut could lead to high biomass production and WUE but may not necessarily improve pod yield under drought stress conditions.}, keywords = {Arachis hypogaea L,Biomass production,Drought conditions,Drought resistance,Pod yield}, url = {https://ijpp.gau.ac.ir/article_984.html}, eprint = {https://ijpp.gau.ac.ir/article_984_4d0347c5b2ef744868ea6d326c46ecea.pdf} } @article { author = {Sadrabadi Haghighi, R. and Critchley, N. and Leifert, C. and Eyre, M. and Cooper, J.}, title = {Individual and interactive effects of crop type and management on weed and seed bank composition in an organic rotation}, journal = {International Journal of Plant Production}, volume = {7}, number = {2}, pages = {243-268}, year = {2012}, publisher = {Gorgan University of Agricultural Sciences}, issn = {1735-6814}, eissn = {1735-8043}, doi = {10.22069/ijpp.2012.985}, abstract = {We investigated the effects of organic and conventional pest and fertility management on weed cover and the seed bank community in an organic rotation. The study was conducted during the 4th and 5th years of an organic rotation on part of a long term organic-conventional comparison trial. Results showed that although crop type (potato vs. cabbage) in a single year significantly affected weed functional group and cover of individual species, it did not change weed functional group and composition in the seed bank in the following year. Five years of organic crop protection management increased weed species that depend on regeneration from seed and increased Ellenberg light, reaction and nitrogen values and a seed bank persistence index in comparison with conventional crop protection management. Three species (Chenopodium album L., Poa spp. L. and Stellaria media (L.) Villars) that is important for biodiversity of arable fields were more prevalent in organic protection plots. Fertility management had no significant effects on weed seed bank composition and functional group. The additive effect of organic practices on perennial ratio and competitor radius value was an important finding. Organic fertility management and crop protection acted together to increase these two aspects of the soil seed bank in comparison with other treatment combinations and a similar effect was seen on Poa spp. L.}, keywords = {Additive effect,Weed cover,Weed functional group,Crop protection,fertilizer}, url = {https://ijpp.gau.ac.ir/article_985.html}, eprint = {https://ijpp.gau.ac.ir/article_985_a8f406b2c491eb138bd2817f69984a16.pdf} } @article { author = {Surendran, U. and Vani, D.}, title = {Influence of arbuscular mycorrhizal fungi in sugarcane productivity under semiarid tropical agro ecosystem in India}, journal = {International Journal of Plant Production}, volume = {7}, number = {2}, pages = {269-278}, year = {2012}, publisher = {Gorgan University of Agricultural Sciences}, issn = {1735-6814}, eissn = {1735-8043}, doi = {10.22069/ijpp.2012.986}, abstract = {Impact of Arbuscular mycorrhizal fungi (AMF) in sugarcane productivity was assessed through a field experiment from plant and ratoon sugarcane in Tamil Nadu, India. Control, 12.5 and 18.75 kg ha-1 of AMF along with 75% and 100% of phosphorous application were triedas treatments. 18.75 kg ha-1 AMF applied plots showed significant difference in germination percentage, tiller number, internode thickness and ultimately in cane yield in both plant and ratoon crop comprising two seasons. Quality parameters such as Pure Obtainable Cane Sugar and brix% of sugarcane were also significantly improved with the application of AMF, compared to control. The yield and post harvest soil fertility data showed that there is considerable statistically significant difference between AMF applied plots and control plots. These results suggest that the application of AMF will assist in improving the profitability of the farmers through higher sugarcane productivity and sustaining soil fertility. Besides, the quantity of phosphorus fertilizer application can also be reduced by 25% and application of AMF as a biofertilizer to sugarcane is good boon for millers since it has a direct impact on the quality of sugarcane juice.}, keywords = {Biofertilizer,Phosphorus,Sugarcane,Yield and sugar content}, url = {https://ijpp.gau.ac.ir/article_986.html}, eprint = {https://ijpp.gau.ac.ir/article_986_dae5955c408ed8589176ea474328da4d.pdf} } @article { author = {Thanopoulos, Ch. and Akoumianakis, K.A. and Passam, H.C.}, title = {The effect of season on the growth and maturation of bell peppers}, journal = {International Journal of Plant Production}, volume = {7}, number = {2}, pages = {279-294}, year = {2012}, publisher = {Gorgan University of Agricultural Sciences}, issn = {1735-6814}, eissn = {1735-8043}, doi = {10.22069/ijpp.2012.987}, abstract = {Bell peppers grown in greenhouses in the Mediterranean region are frequently subjected to high temperatures in summer and low temperatures in winter. The present experiment was designed to quantify the effect of season on pepper fruit growth, maturation and ripening. Three bell pepper (Capsicum annuum L.) cultivars (Yolo Wonder, California Wonder and E84066) were cultivated in an unheated greenhouse during summer and autumn. Fruit size, fresh weight and volume were higher in the autumn due to increased fruit length and pericarp weight. However, colour transition from green to red was significantly delayed in the autumn and the vitamin C concentration was also lower than in the summer. Similarly, the internal C2H4 concentration was lower at the mature red stage of the autumn-grown fruit than in the summer, whereas the respiration rate and the internal CO2 concentration did not differ. Irrespective of season, the internal C2H4 and CO2 concentrations correlated with the number of seeds per fruit, suggesting that seed metabolism significantly influenced the internal atmosphere of the fruit. Additionally, the number of seeds per fruit in the autumn correlated with fresh fruit weight and volume, but not in the summer. In conclusion, bell pepper fruits produced in the autumn were larger in size, but lower in nutritional value (less vitamin C), while the effects of growth season on the pepper fruit morphology and physiology closely related to the number of seeds per fruit in autumn, but to a less extent in summer.}, keywords = {Capsicum annuum,Fruit ripening,Vitamin C,Respiration,Ethylene,seeds}, url = {https://ijpp.gau.ac.ir/article_987.html}, eprint = {https://ijpp.gau.ac.ir/article_987_2006ddd336d8c853905d2c79227f7d52.pdf} } @article { author = {Noshadi, M. and Fahandej, S. and Sepaskhah, A.R.}, title = {Effects of salinity and irrigation water management on soil and tomato in drip irrigation}, journal = {International Journal of Plant Production}, volume = {7}, number = {2}, pages = {295-312}, year = {2012}, publisher = {Gorgan University of Agricultural Sciences}, issn = {1735-6814}, eissn = {1735-8043}, doi = {10.22069/ijpp.2012.988}, abstract = {In this research, the effects of irrigation with saline and fresh water through drip irrigation method and using two irrigation management strategies: M1, M2 (M1 is irrigation with fresh water in alternative with saline water, M2 is saline water in first half time of each irrigation event and fresh water in the second half), on the yield, water productivity (WP), soil salinity, plant height and diameter, fruit water content, fruit density, "L", "a" and "b" colorimetric factors, textures, strength, sodium, calcium and nitrogen concentrations were investigated. The experiments were conducted in a randomized completely block design as split plot with three replications in which management strategies were the main plots and subplots were different levels of salinity, 0.68, 2, 4, 6 and 8 dS/m (S0, S1, S2, S3, S4, respectively). Highest and lowest yields were in M1S1 (59.12 t/ha) and M2S4 (18.81 t/ha) treatments, respectively. The yield difference between M1 and M2 management strategies were significant at 5% level of probability and the average yield of M2 was 24.20% less than the M1 treatment. Applied irrigation water was decreased with increasing salinity levels because leaf area and leaf transpiration was reduced. Therefore, water productivity was increased, so that the highest water productivity was in the M1S4 treatment. To evaluate the use of saline water on soil, ECe was measured in each plot at four layers in soil. Highest ECe was in the S4 salinity level in both management strategies. Based on soil salinity and crop yield, M1 and M2 management strategies were suitable at lower levels of salinities (0.68 and 2 dS/m) and salinities over 4 dS/m, respectively. Furthermore, M1 management strategy, due to more efficient leaching in the surface layers of soil, was more appropriate than M2 management strategy.}, keywords = {Salinity,Irrigation management,Tomato,Water productivity}, url = {https://ijpp.gau.ac.ir/article_988.html}, eprint = {https://ijpp.gau.ac.ir/article_988_426dc09cc9e78a12f02c73924a592063.pdf} } @article { author = {Shabani, A. and Sepaskhah, A.R. and Kamgar-Haghighi, A.A}, title = {Responses of agronomic components of rapeseed (Brassica napus L.) as influenced by deficit irrigation, water salinity and planting method}, journal = {International Journal of Plant Production}, volume = {7}, number = {2}, pages = {313-340}, year = {2012}, publisher = {Gorgan University of Agricultural Sciences}, issn = {1735-6814}, eissn = {1735-8043}, doi = {10.22069/ijpp.2012.989}, abstract = {Shortage and salinity of irrigation water are two major constraints that influence rapeseed production in arid and semi-arid regions of central and southern Iran. In this study, effects of deficit irrigation with different salinity levels and planting methods (in-furrow and on-ridge) as strategies for coping with water and salinity stresses on yield and yield quality of rapeseed were investigated in a two-year experiment. Irrigation treatments consisted of full irrigation (FI), 0.75 FI and 0.50 FI in first year and FI, 0.65 FI and 0.35 FI in second year and salinity levels of irrigation water were 0.6 (well water), 4.0, 7.0 and 10.0 dS m-1 in first year and 0.6, 4.0, 8.0 and 12.0 dS m-1 in second year. In 0.75 FI and 0.5 FI irrigation treatments, seed yield reduced by 15.0 and 25.9%, respectively and in 0.65 FI and 0.35 FI it decreased by 20.8 and 33.0% relative to FI, respectively. Planting in-furrow increased yield by 5.3 and 13.7%, respectively, in first and second year (with frost occurrence in dormant period in second year) relative to on-ridge planting. Deficit irrigation and salinity decreased dry matter, plant height, seed oil content, oil and protein yields and 1000-seed weight in both years. Results indicated that 11.0, 13.1 and 11.8% deficit irrigation (reduction in applied irrigation water compared to full irrigation) could be imposed without loss in seed yield, oil and protein yields of rapeseed, respectively. In-furrow planting increased water use efficiency compared with on-ridge planting by 7.0 and 13.2% for first and second year, respectively. Increase in salinity level at same conditions of deficit irrigation and planting method decreased water use efficiency. Therefore, deficit irrigation and in-furrow planting method strategies can be used to increase water use efficiency in water scarce conditions.}, keywords = {Planting method,Rapeseed,Salinity,Water stress,Yield components}, url = {https://ijpp.gau.ac.ir/article_989.html}, eprint = {https://ijpp.gau.ac.ir/article_989_63a2463d335c9edcd20398a42a4c15b3.pdf} } @article { author = {Zhang, Q.Y. and Li, Z.L. and Han, B.J. and Zhoa, K.Q. and Zhang, X.Y. and Hashemi, M. and Liu, X.B.}, title = {Immediate responses of cyst nematode, soil-borne pathogens and soybean yield to one-season crop disturbance after continuous soybean in northeast China}, journal = {International Journal of Plant Production}, volume = {7}, number = {2}, pages = {341-354}, year = {2012}, publisher = {Gorgan University of Agricultural Sciences}, issn = {1735-6814}, eissn = {1735-8043}, doi = {10.22069/ijpp.2012.990}, abstract = {Habitat disturbance affects numerous ecosystem components and processes, but its effect on continuous soybean system is less available. Soybean was seeded following six preceding crops, including grain soybean (Glycine max L. Merill.), wheat (Triticum aestivum L.), sugar beet (Beta vulgaris L.), tobacco (Nicotiana tabacum L.), corn (Zea mays L.) and hemp (Cannabis Satia L.), on a Mollisol farmland that had previously been cropped to continuous soybean for seven years in Northeast China. Soybean after hemp reduced the number of second-stage juveniles of soybean cyst nematode (J2) by 29.8% compared to continuous soybean, while soybean after corn had the lowest J2 number. The number of soilborne pathogens of Fusarium, Rhizoctonia and Pythium after corn and hemp and root rot disease severity index after all crop disturbance, except sugar beet, were significantly lower than continuous soybean. Soybean yield after hemp disturbance was improved by 10.8%, while sugar beet disturbance had the greatest negative impact on soybean yield. No differences were found among crop disturbance for protein and oil content in soybean seed. Crop disturbance changed the habitat already developed in the continuous soybean system. Adoption of hemp disturbance has the potential to be an alternative approach in managing continuous soybean production system in Northeast China.}, keywords = {Crop disturbance,Ecosystem components,Cyst nematode,Soil-borne diseases,Seed yield,Continuous soybean,Preceding crop}, url = {https://ijpp.gau.ac.ir/article_990.html}, eprint = {https://ijpp.gau.ac.ir/article_990_cca27c46c13c93f00b0137c165653f33.pdf} }