دراسة اقتصادية لأثر مستويات الري و الأصناف على إنتاجية محصول فول الصويا

الملخص EN

The research aims in particular with two axes, the first is to try to rationalize the use of irrigation water by reducing irrigation water by increasing the interval between irrigations, and secondly : to devise new varieties that are more tolerant to reduce the quantities of irrigation water while achieving the highest possible productivity of these varieties, which means that the main objective for each of the two axes is to achieve the highest possible productivity of the unit of irrigation water used in the production of soybean crop, so this research aims to study the economic effects of reducing the quantities of irrigation water only for the current or new varieties to find out any transactions and varieties that can achieve the highest possible productivity in light of these transactions and items, by estimating the morality of the assumptions between the productivity of one individual under different conditions for the quantities of water used, as well as estimating the significant differences between the productivity of old and new varieties, as well as studying the efficiency of irrigation water use by presenting the productivity of the unit of water used.

this research was conducted at the Sakha agricultural research station during the 2019 / 2020 agricultural season under the use of three irrigation levels 25,20,15 days.

several statistical methods were used to conduct this research, including two-way analysis of variance, one-way analysis of variance, L.S.D.

test, as well as economic methods the results revealed that there were significant differences in the effect of cultivars with different irrigation levels on the productivity of soybean crop.

it was found that there were statistically significant differences between the varieties Giza 83, Giza 35, Holloday and Toano, which means that there is an increase in the productivity of soybean seeds, and by estimating the significance of the varieties with the three irrigation levels, it was found that there were significant differences between the levels of irrigation 15 days and 25 days with the levels of irrigation 20 days .

by conducting a significant difference test between the average productivity of the PI416937 variety, it was found that there were significant differences with the irrigation level of 20 days and the level of irrigation 25 days, and the Giza83 variety with the irrigation level 20 days and 25 days, and the Giza111 variety with the irrigation levels 25 days, also the H30 variety with the irrigation level 25 days, and the h32 class with irrigation level of 25 days and Toano variety with irrigation level of 20 days and 25 days and the l162 variety with the level of irrigation 20 days.

it was found from the results of estimating the production function by comparing the variety Giza21 with the rest of the soybean varieties.

it was found that there was an increase in some varieties over Giza21, and the most important ones, respectively, were the varieties Giza83, Giza111, Hl4l8 and Holloday, with values amounting to 15,118,173,24 kilos.

grams, respectively, and by comparing the three irrigation levels with all varieties, it was found that there was a decrease between the irrigation level 15 days and 25 days with the irrigation level 20 days about 28 M3 and 56 M3, respectively.