The research was carried out in 1991-1994 and in 2012-2019 in the conditions of the Tver region. The effectiveness of two variants of ridge band-broadcast method of sowing grain crops was studied. The soils of the experimental plot were soddy-podzolic, well cultivated, light loamy and loamy sand gleyic drained by closed drainage. It has been established, that in the conditions of the northwestern part of the Non-chernozem zone on drained lands, grain crops (winter rye, winter triticale, barley, oats, spelt) should be grown on ridges 40-80 mm high using an improved ridge band-broadcast method of sowing that ensures smoothing of the soil surface, creation of a compacted bed and good contact of seeds with the soil by pressing them. By ridge band-broadcast method of grain crop sowing, an average 10.3 % increase in field germination of seeds was noted for all crops, plant survival – by 5.8 %, viability of winter rye plants during wintering – by 12.5-19.0 %, enhancing photosynthetic activity of plants, improving the structure and increasing the yield – by 0.21-1.19 t / ha. The yield increase was obtained both due to an increase in the number of productive stems by 17.8 % (on average in crops), and due to a higher grain mass in the ear (panicle) – by 10.0 %. The most significant increase in the number of productive stems during ridge sowing was observed in spelt and winter triticale (by 26.0-83.1 %), in the number of grains – in oats and winter rye (by 4.7-17.9 %), in the weight of 1000 grains – in barley, in grain mass in an ear (panicle) – in oats (17.0-24.0 %) and winter rye (8.0-10.1 %). The advantage of the ridge band-broadcast method of sowing is due to optimizing the area of plant nutrition and improving the agrophysical conditions in the seed layer of the soil.
The article presents the results of three-year studies conducted on the experimental field of the All-Russian Research Institute of Reclaimed Lands (VNIIMZ). The purpose of the research was to study the efficiency of various rates of fertilizer usage on winter triticale productivity. There has been studied the effect of rates of mineral fertilizer usage on the elements of the winter triticale yield structure, protein percentage in grain, use of photosynthetically active solar radiation (PAR efficiency), fertilizers’ cost recovery by yield increase. The cultivation of winter triticale was carried out on a drained well-cultivated sod-podzolic light loamy gleyed soil. The winter triticale was sown after one-year-old clover in three variants: the first variant was without fertilizer usage, the second variant was with N15Р15K45+ N30fertilizer usage (in the period of tillering) and the third variant was with N30Р30K90+N60fertilizer usage. In the variant without fertilizer usage the productivity was 3.37 t/ha on average. In the second variant the productivity increased on 56.4% to 5.27 t/ha, in the third variant the increase was on 78.9% to 6.03 t/ha. Due to the use of fertilizer, the number of productive stems raised on 95 and 117 pcs/m2, the number of kernels per head increased on 4.0 and 6.0 pcs. The protein content in grain in the variants with fertilizer usage increased on 1.0–1.7%. The PAR efficiency without fertilizer usage was the lowest (1.34), it was 1.94 with N45Р15K45fertilizer usage and 2.26 with N90Р30K90fertilizer usage. Fertilizers’ cost recovery by winter triticale yield increase which was sown after one-year-old clover in a well-cultivated soil, was the highest with 18.1 kg/kg of N45Р15K45fertilizer usage and with 12.7 kg/kg of N90Р30K90fertilizer usage.
Relevance. The article is devoted to the actual problem of the spring-summer seeding of winter rye on drained lands.Methods and results. The studies were carried out in 2017–2020 at the experimental site of VNIIMZ (Tver region), drained by a closed drain. The soil of the experimental site is sod-podzolic light loamy gleyic slightly acidic, the content of humus is 1.8–2.4%, exchangeable potassium and available phosphorus content is increased and high. In field experiments, the effectiveness of spring-summer sowing dates for winter rye in a fallow field of crop rotation was studied with a ridge belt-spread cultivation method. It has been established that under the conditions of the north-west of the Non-Chernozem zone winter rye with its spring-summer sowing can form practically the same yields as with the standard cultivation technology. On average over 4 years the biological yield of rye grain when grown after spring rape was 3.69 t/ha, and with spring-summer sowing in a fallow field and harvesting the next year — 3.70 t/ha. The leveling of the variants in terms of yield with a significant difference between them in the plant density occurred due to productive tillering. The coefficient of productive bushiness in the control was 1.4, and with spring-summer sowing — 2.3. Differences between the variants in the number of productive stems, the number of grains per ear, and the weight of 1000 grains on average over 4 years were insignificant. High efficiency of harrowing of spring-summer crops of rye was noted both in the sowing year (late August — early September) and in spring after overwintering. The preservation of plants improved, the number of productive stems increased by 14.3%, and the biological productivity of rye increased by 18.4%. The technology of cultivation of winter rye with spring-summer sowing can significantly reduce the amount of field work in the fallow field, eliminate the costs of plowing, cultivation, sowing, rapeseed, and reduce the total production costs for maintaining 1 hectare of a fallow field by 7–10 thousand rubles.
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