The effect of different amounts of water and nitrogen fertilizer on yield of two cotton cultivars (Golestan and B 557)

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Mahmom Salkovieh S.; HEZARJERIBI A.; GHORBANI NASRABAD GH.; SHARIFAN H.; ZAKERINIA M.; Valinezhad F.

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Journal: Journal of Water and Soil Conservation Year:2020 | Volume:26 | Issue:6 Page(s): 215-230

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Title

The effect of different amounts of water and nitrogen fertilizer on yield of two cotton cultivars (Golestan and B 557)

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Golestan climateQ2

IrrigationQ1

Rain irrigationQ2

Water consumptionQ2

Abstract

Background and Objectives: Cotton is a plant that responds to the amount of Irrigation water and Irrigation time and due to lack of water in Golestan province, the need for optimal use of water unit is more than ever before. This will not be achieved except by applying modern methods of surface Irrigation or pressurized Irrigation and appropriate management of Irrigation and enhancing of water use efficiency. Materials and Methods: This experiment was conducted as a split plot design in a factorial with three replications at Hashemabad Cotton Research Station. Physical and chemical parameters of soil such as soil texture, bulk density, moisture content of field capacity and wilting point, soil salinity and soil acidity before cultivation were measured by sampling from two depths of 0 to 30 cm and 30 to 60 cm. fertilizer requirement was calculated according to soil test. Irrigation was done before planting due to soil moisture deficit. Planting of two cotton cultivars was done randomly. During the growing season and before the first Irrigation, sprinkler Irrigation system as line source was implemented. Irrigation was carried out based on the water requirement of Plot I5 to reach the field capacity. During the growth period, parameters of yield and yield components including plant height, time of the first flowering, and boll opening and finally the yield were measured. Different amounts of Irrigation water treatments including rainfed to over Irrigation as main plots and treatments of different amounts of nitrogen fertilizer including 0, 33, 66 and 100% fertilizer recommendation as well as cotton cultivars were considered as subplots. Results: The results showed that the highest yield (4362 kg / ha) was related to I4 treatment and the lowest yield was obtained from rainfed (without Irrigation) with 3379 kg / ha. The yield of I2, I3, I4, I5 and I6 treatments was 2. 2, 16. 7, 29. 1, 8. 1 and 15. 7%, higher than rain fed (I1), respectively. Among fertilizer treatments, the highest yield was related to treatment of without fertilizer application, which was significantly different with treatments of 66% and 100% fertilizer requirement while the lowest yield was related to 66% fertilizer requirement. In a research year (2012) due to suitable rainfall in the growing season, cotton plants were well-grown and any excess water or nitrogen fertilizer accelerated vegetative growth which ultimately led to a decrease in reproductive growth and Subsequently, reduction in cotton yield. In terms of earliness percentage, rainfed and I4 treatments were the earliest and the latesttreatments. Different amounts of nitrogen fertilizer had no effect on earliness percentage. The highest number of bolls per plant was related to I5 and I6 treatments, which had significant difference with I1 and I2 treatments, but did not have significant difference with I3 and I4 treatments. The amount of nitrogen fertilizer application from 0% to 100% of fertilizer requirement did not have a significant effect on the number of bolls per plant. Conclusion: Regarding to results of yield, yield components and saving in water, the best Irrigation treatment was I4 treatment. The yield of Golestan cultivar was 17. 9% higher than that of B-557. Water use efficiency in rainfed and full Irrigation treatments was 1. 51 and 0. 81 kg /m3 /ha, respectively. The earliness of B557 was higher than Golestan cultivar. Cultivars of Golestan and B557 were the same in number of bolls per plant.

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APA: Copy

Mahmom Salkovieh, S., HEZARJERIBI, A., GHORBANI NASRABAD, GH., SHARIFAN, H., ZAKERINIA, M., & Valinezhad, F.. (2020). The effect of different amounts of water and nitrogen fertilizer on yield of two cotton cultivars (Golestan and B 557). JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 26(6 ), 215-230. SID. https://sid.ir/paper/397032/en

Vancouver: Copy

Mahmom Salkovieh S., HEZARJERIBI A., GHORBANI NASRABAD GH., SHARIFAN H., ZAKERINIA M., Valinezhad F.. The effect of different amounts of water and nitrogen fertilizer on yield of two cotton cultivars (Golestan and B 557). JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2020;26(6 ):215-230. Available from: https://sid.ir/paper/397032/en

IEEE: Copy

S. Mahmom Salkovieh, A. HEZARJERIBI, GH. GHORBANI NASRABAD, H. SHARIFAN, M. ZAKERINIA, and F. Valinezhad, “The effect of different amounts of water and nitrogen fertilizer on yield of two cotton cultivars (Golestan and B 557),” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 26, no. 6 , pp. 215–230, 2020, [Online]. Available: https://sid.ir/paper/397032/en

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