The influence of biological formulations on sugar beet productivity and the biofuel output in the conditions of the western Polissya Ukraine

Introduction. The article presents the results of studies on the impact of biological products on sugar beet productivity and biofuel yield in Western Polissia. Conclusions. The use of mineral fertilizers at a dose of N150 P100 K150 + green manure provided the best yield of sugar beet roots of 58.1 t/ha. Biofuel output was 4.7 t/ha for bioethanol and 13.6 m3 for biogas. The highest profitability of growing sugar beet for biofuels (116%) was noted for the introduction of BTU (universal) + mustard white as a green manure crop.

The effect of minimum methods of primary tillage on the structural and aggregate composition of gray forest soil in the Chuvash Republic

The article informs on the 2006-2019 studies of the effect of resource-saving methods of tillage based on the use of combined tillage units KOS-3 (1st minimum), BDM-3.2х4 (2nd minimum), Spider-6 (3rd minimum without autumn tillage) in two crop rotations (grain-fallow-row crop rotation and grain-fallow-row green manure crop rotation) on the structural-aggregate composition of gray forest soil and crop yields. During the year of laying the experiment the percentage of structural aggregates (0.25-10 mm) in the soil of a grain-fallow-row crop rotation ranged from 72.2 to 74.4 %, in a grain-fallow-row green manure crop rotation – from 70.1 to 73.2 %, with the structural coefficient (K) 2.60-2.91 and 2.41-2.73, respectively. For two crop rotations the structural state of the soil improved due to the effect of green manure crop rotation (К = 3.07, LSD05 = 0.13) as compared to the grain-row without green manure (К = 2.93). More significant differences according to the soil structure coefficient were obtained in studied tillages: 3.03 (plowing), 3.41 (1st minimum), 2.91 (2nd minimum), 2.65 (3d minimum) with LSD05 = 0.17. The first and the second methods of minimal tillage had an advantage over plowing as to the increase in agronomically valuable aggregates (0.25-10 mm) as compared with the original soil. On the average among the crop rotations the yield of grain crops by classical and 1st minimum methods of tillage (3.65-3.66 t/ha) exceeded significantly the indicators of all the rest variants with minimum tillage (by 0.15-0.43 t/ha, LSD05 = 0.10). The yield of potato in all variants with minimal soil tillage was significantly lower (by 5.1-8.3 t/ha, LSD05 = 1.44) than with plowing (27.8 t/ha). The assessment of profitability of grain crops cultivation showed the advantages of replacing the moldboard plowing for resource-saving methods using combined tillage units KOS-3 and BDM-4-3.2 which provided the yield of spring and winter wheat, barley and spring vetch at the level of 2.42-4.50 and 2.33-4.41 t/ha, respectively, with cultivation profitability of 51-64 and 44-59 %. The third minimum method of tillage decreased the cultivation profitability of grain crops and vetch by 10-15 %. The best indicators of potato production profitability (67-82 %) were achieved when using the classical variant of soil tillage.

Yield and economics of blackgram crop effected by green manures and phosphorus levels in riceblackgram cropping sequence

A field experiments was conducted during 2015 and 2016 to study the effect of green manures and phosphorus levels in blackgram crop at Agricultural College Farm, Bapatla. The experiment was conducted in split- split plot design on sandy clay loam soil with three main treatments three subtreatments to Kharif rice and three sub-sub treatments to Rabi crop. The treatments consisted of Dhaincha green manure crop, sunnhemp green manure crop and without green manure as main plot treatments and three phosphorus levels to rice crop comprising of 45 kg P2O5 ha-1, 60 kg P2O5 ha-1 and 75 kg P2O5 ha-1 as sub- plot treatments and are replicated thrice. The Rabi experiment was laid out on the same site in a split-split plot design without disturbing the soil for succeeding blackgram crop and each of the Kharif plot was divided into three sub-sub plots to receive three levels of phosphorus (No P, 50% RDP and 100% RDP) to each plot. Yield and economics of blackgram which received Dhaincha green manure incorporation with 75 kg P2O5 ha-1 to Kharif rice crop and 100% RDP to Rabi blackgram was recorded significantly higher and it was on a par with sunnhemp green manure incorporation with 75 kg P2O5 ha-1 to Kharif rice crop and 100% RDP to Rabi blackgram.

Yield and economics of rice crop as influenced by green manures and phosphorus levels

A field experiment was conducted during Kharif 2015 and 2016 to study the effect of green manures and phosphorus levels to rice crop at Agricultural College Farm, Bapatla. The experiment was conducted in split plot design on sandy clay loam soil with three main treatments and three subtreatments. The treatments consisted of Dhaincha green manure crop, sunnhemp green manure crop and without green manure as main plot treatments during Kharif season and three phosphorus levels to rice crop @ 45 kg P2O5 ha-1, 60 kg P2O5 ha-1 and 75 kg P2O5 ha-1as sub-plot treatments. Significantly the highest grain yield of rice was recorded with Dhaincha green manure incorporated treatment (5592 and 5587 kg ha-1) when compared to control. Among the phosphorus levels applied to rice crop the highest grain yield (5545 and 5567 kg ha-1) was recorded with 75 kg P2O5 ha-1 and it was on a par with 60 kg P2O5 ha-1 during both the years of study. Dhaincha green manure incorporation to rice crop recorded maximum gross returns (Rs. 88724 and Rs. 88703), net returns (Rs. 36024 and Rs. 36003) and benefit cost ratio (1.68 and 1.7) and significantly the maximum gross returns (Rs. 88014 and Rs. 88443), net returns (Rs. 35005 and Rs. 34585), benefit cost ratio (1.67 and 1.7) were observed, which received 75 kg P2O5 ha-1 treatment during both the years of study.

Sunn Hemp : a Promising Cover Crop in Florida

SL-306 (formerly SS-AGR-96), a 4-page illustrated fact sheet by Yuncong Li, Qingren Wang, Waldemar Klassen, Edward A. Hanlon, Jr., describes this green manure crop that has been grown for centuries in Southeast Asia — origin and distribution, description, uses, production and harvest, and seed production. Includes references. Updated with title change by the UF Department of Soil and Water Sciences, September 2015. Minor revision October 2018. Previous version: Li, Yuncong, Qingren Wang, Waldemar Klassen, and Edward Hanlon. 2009. “Sunn Hemp - A Cover Crop in Florida”. EDIS 2009 (8). https://journals.flvc.org/edis/article/view/118084.

REACTION OF DOMESTIC AND FOREIGN POTATO VARIETIES TO THE USE OF GREEN MANURE

The article presents the productivity and quality of domestic and foreign potato varieties when grown in crop rotations with shortened rotation. As a green manure crop on control (permanent landing) we used mustard white after harvesting potatoes, in a two-field crop rotation-vicooat mixture, and in a three-field-rotationannual clover. The yield of potatoes of different varieties in crop rotations was significantly higher than in the control rotation. The prevalence of diseases in plantings and tubers on the background of 100% saturation was 1.5-2 times higher than in crop rotation. Plowing of green manure mass into the soil contributed to the containment of potato diseases. The most economically profitable are cultivation of a domestic variety Kolobok in crop rotations. Economic efficiency of growing potatoes in crop rotations with different degrees of saturation shows us that, on average, for 3 years, the most economically profitable cultivation of domestic variety Kolobok in the variants of 2 and 3 - full crop rotations, permanent culture are less effective. For example, the profit in the 2-pole crop rotation for the variety Kolobok amounted to 143 thousand rubles/ha, and in the 3-pole 193 thousand. rubles / ha, permanent culture-74 thousand rubles / ha (2-2. 5 times less). According to the variety Breeze, these indicators amounted to 133, 183 and 70 thousand rubles/ha, respectively.Cultivation of the Saturn variety was even less profitable, namely-112, 163 and 37 thousand rubles / ha, respectively.