In the article the state, main results of grain and pulse crops selection in the Republic of Belarus is analyzed, new varieties characteristics is given.

   The researches has shown that on soddy-podzolic sandy loam soils of Belarus, the optimal sowing term duration of Germes variety was 11 days and of Almaz F1 and Rubin F1 hybrids – 15 days. Every day of delay with the spring rape sowing after the above terms led to shortfall in yield by 0,1 and 0,12 t/ha or 3,5 and 4,1 % in F1 hybrids and by 0,08 t/ha or 3,0 % in the variety. The general tendency of fat accumulation in the oilseeds of both varieties and hybrids expressed in content increase from the first term to the second one (44,8–45,2 %) followed by decrease to the fourth term (43,3–43,9 %).

   The research results of the effect of cultivation technology intensification levels on grain yield of winter wheat seed fractions and their infections are presented in the article. It is shown that variability of fraction composition and grain size mainly depended on weather conditions and insignificantly on the technology intensification levels. Affection of grain by fungal diseases depended on the weather conditions in the period of ripeness and harvesting and almost did not change under the influence of the intensification levels. The relative grain yield of seed fractions ranged within 71,7–83,1 % of the total yield weight.

   In the field experiments on sod-podzolic loam soil of the north-eastern part of Belarus the effect of the application of new forms of complex fertilizers was studied on productivity, structure and quality of the crop of potatoes.

   The results of studying efficiency of nitric extranutrition to the crops of winter wheat while planning different early-spring reserve of mineral nitrogen in the layer of 0–60 cm deep of the sod-podzolic and straw-coloured and sandy loam soil during the early-spring period are given in the article. It is established that the most productive cultivation of winter wheat occurs while planning early-spring reserve of mineral nitrogen in the soil layer of 0–60 cm deep at 180 kg/ha with two (II and III) extranutritions with nitrogen fertilizer.

   In the article the results of researches on biological efficiency of the herbicide Talaka, EC (phenoxaprop-n-ethtyl, 69 g/l+mefenpyr-diethyl, 75 g/l) OOO ”Frandesa” Co., Belarus in winter wheat crops are presented. The preparation has shown high biological efficiency against annual grass weeds and has provided with the reliable grain yield increase.

   In the article the results of researches on studying the biological efficiency of a new preparation Craft, WE (36 g/ha abamektin) against fruit mites (Panonychus ulmi L., Bryobia redikorzevi Reck.) in apple-tree and pear suckers (Psylla pyri L., Psylla pyrisuga Först.) in pear-tree are presented. It is determined, that Craft on the 14-th day after application has provided with fruit mite number decrease for 74,1–99,1 %, pear suckers – for 74,2–80,5 % what allows to regulate effectively the phytophages number during vegetation by two times application of a preparation.

   In the article the results of researches for studying influence of herbicides for weed growing in crops and grain yield of new zoned variety of yellow lupine Vladko are presented. It is determined that the highest effect in crop protection against weeds have been provided by applying herbicide Primextra gold TZ, SC (2,5 l/ha) before crop shoots and by next applying the crops of herbicide Pilot, WSC (2,0 l/ha).

   In the article the evaluation of weeds harmfulness in Phacelia tanacetifolia Benth. crops is given. The selectivity, biological and economic efficiency of herbicides based on trifluralin, C-metolachlor, metamitron, clopyralid and quizalofop-P-ethyl is studied. Based on done researches a system of herbicides application in Phacelia tanacetifolia Benth. crops is developed.

   The technical efficiency of fungicides AcantoPlus 28, Vareon 520, Amistar Trio 255 EC, Tilt Turbo 575 EC, Soligor 425 EC against the spread leaf diseases on winter wheat was studied. On average, over three years it amounted to variety Podolianka 60,6–74,0 % against powdery mildew, 100 % against brown rust and 33,9–51,6 % against septoria leaf; on variety Myrlena – 58,9–69,3 %, 100 % and 33,5–45,0 %, respectively. The highest efficiency in the varieties was noted against powdery mildew in the variant with fungicide Vareon 520 (0,8 l/ha), against septoria leaf – in the variant of application with AcantoPlus 28 (0,75 l/ha). All fungicides were effective against brown rust.

 The article presents the results of two years of research on the optimal content of dry matter, sugars, ascorbic acid and nitrates in the cultivation of watermelon on sod-podzolic sandy loam soil.

   The article presents the results of the efficiency of doses of complex mineral fertilizers on the yield of leek and biochemical composition of the false stem. Established the optimal dose of complex mineral fertilizers N98P90K143+N15+N15+N10 with a foliar application of nitrogen for growing leeks , providing a high return on 1 kg of NPK production , increase productivity and the value of net income.