Определение оптимальных сроков и схем посева для сортов нута на светлых сероземах Мирзачуля

Аннотация

Subjects of research: As an subject of the research we used 93 accessions from the collection of international organization “ICARDA”, and the variety “Uzbekiston-32”. Besides we researched into the dates and schemes of the varieties such as “FLIP98-140c-(Asilbek)”, “FLIP98-116c-(Mir0z)” “FLIP98-152c" and “FLIP98-183c- (Halima)”. Purpose of work: To select varieties of chickpea from the world collection, that can adapt to weak salted soils of Mirzachul, to determine optimal dates and schemes of sowing that provide large and qualitative yield and to substantiate scientifically. Methods of research: In the research work the observations, calculations and analysis have been conducted according to methodical guidance “The methods of conducting field experiments” of Uzbek Research institute of Cotton growing (2007) and “The methodology of state variety testing of agricultural crops” (1985, 1989). The statistic analysis of the data has been carried out according to “The methodology of field experiment” by Dospehov B.A. (1985). The results obtained and their novelty: Under the conditions of Syrdarya gray meadow soils the chckpca accessions which arc early mature, resistant to salinity and giving large and high qualitative yield have been chosen from the world collection and their valuable economic indications and biological properties have been evaluated, besides their optimal dates and schemes of sowing have been scientifically substantiated for the frist time. Practical value: As a result of studying optimal dates and schemes of sowing the chosen chickpea varieties under the conditions of Syrdarya meadow gray soils, the local chickpea varieties have been enriched with early mature, salt resistant, logging resistant, compact stalk, high yielding and qualitative varieties. Degree of embed and economic effectivity: According to the results of the research chickpea varieties such as “FLIP98-116c-(MirOz)”, “FLIP98-140c-(Asilbek)”, “FLIP98-183c-(Halima)” and “Uzbekistan-32” have been introduced in Sayhunobod and Boyovut districts of Syrdarya region within the optimal dates and schemes of sowing when chickpea variety “FLIP98-116c-(MirOz)” was planted in autumn within the scheme 60x10x1, the average yielding was 39 center per hcctar, overall economic profit totaled 2340 thousand soms, pure income made 1456,5 thousand sums and the degree of profit was 164,9 %. Field of application: It can be used in the farms with weak salted and meadow gray soil conditions of MirzachuL