SPINACH GROWING IN THE NORTHERN FOREST STEPPE OF TYMEN REGION

Abstract

There were studied spinach varieties of three maturity groups, and techniques for preparing seeds to sowing. Investigations were carried out in the experimental field of the State Agrarian University of the Northern Trans-Urals, Tyumen Region, in 2013, 2014.The objectives of investigations were to determine promising varieties and influence of seed grading and seed rates on spinach yields. In the experiment were used the following varieties: early-ripening Krepysh and Stoik, mid-ripening Dolphin P3 and Zhirnolistny, late-ripening Varyag. It was found that the greenery yields in early-ripening spinach varieties made up 5.98-6.24 tonnes per ha, mid-ripening 6.27-6.64, and late-ripening 10.46 tonnes per ha, with seed yields of 1.09-1.17, 1.25-1.31 and 1.86 tonnes per ha, respectively. At seed rate of 8 kg seeds of different fractions per ha, the greenery yield was within experimental error 6.93-7.53 tonnes per ha, seed yield 1.28-1.40 tonnes per ha. At seed rate of 800 ths viable seeds per ha, the greenery yield made up 5.78-8.85 tonnes per ha, seed yield 1.14-1.37 tonnes per ha, which increased with the fraction size increased, too. Growing of spinach varieties of different maturity groups has provided pipelined greenery supply during 22 days.