AN EFFECT OF BENZIHOL ON RICE PRODUCTIVITY

The article deals with the use of growth regulator ‘benzihol’ to increase rice productivity. It is a structural analogue of the well-known retardant ‘chlorine choline chloride’ (Cholini chloridum). The medicine is a phyto regulator of new generation, which possesses auxin, retardant, stress protective and immune-modulating activity. The seeds of the variety ‘Kuboyar’ were treated with the medicine before sowing (5 mg/t) and the leaves of vegetating plants were treated with it in the period of tillering (5 mg/ha). The variants of the trial are a control, treatment of seeds, treatment of leaves, treatment of seeds and leaves. The ancestors are a vast layer of perennial grasses (alfalfa), overturning of the layer, an ameliorative field and 2-d year of rice after an ameliorative field.  The study showed that rice productivity greatly increased with seeds and leaves treatment, which was recommended in the production. The seeds and leaves of the new variety ‘Kuboyar’ were treated with ‘benzihol’ and sown after alfalfa it formed the largest productivity during 4 years on average (8,57 t/ha, which was on 1,44 t/ha more than a control (7,13 t/ha). The other ancestors gave similar results.  On average grain productivity increased from 4,88 t/ha to 5,88 t/ha with treated seeds, 5,44 t/ha with treated leaves and 6,16 t/ha with dual treatment. The increases were 1,00 t/ha (20,4%), 0,56 t/ha (11,5%), 1,28 t/ha (26,2%) respectively. in the production it is recommended to use treatment of seeds, as less expensive

The prospects of use of upland rice in the Rostov region

The article deals with the review of the breeding work in the development of upland rice varieties in the Rostov region during the years of 2002-2015. Because of the deficit of water the problem is of great importance the last years. The staff of the laboratory of rice of I.G. Kalinenko ARRIGC has studied the collection of ARIR from which they have taken such varieties tolerant to water deficit as ‘Chan-Chun-Man’, ‘Din Syan’, ‘Sukhodolny’, ‘Bely SKOMS’, etc. They are of low height, with a thin stalk, a small panicle and average heads; they are resistant to fall and to lodging and they are early maturing varieties. The hybrids on 28 combinations and the lines of rice for growing under periodic irrigation have been obtained from the crossing of upland rice samples with such varieties of Don breeding as ‘Razdolny’, ‘Boyarin’ and ‘Komandor’. After multiple choices of recombinant forms the best lines have been assessed in the control farm. Their productivity, as a rule, was the same as of the standard varieties. The sample ‘9497’ (‘Chan-Chun-Man’x‘Boyarin’) produced 7.57 t/ha for six years, that exceeded the productivity of the standard variety ‘Boyarin’ on 0.57 t/ha. In 2015 the sample ‘5782’ (‘Komandor’x‘Chan-Chun-Man’) produced 8.52 t/ha (on 0.86t/ha more than the standard). We cooperate with ARRI of irrigated agriculture (Volgograd) and annually carry out the testing of the best lines. We also work in cooperation with the Institute of Rice (Ukraine, Skadovsk), with ARRIGM’s affiliate in Kalmykiya, where we carried out the agroecological testing of promising lines of rice under rain irrigation. In 2016 there was laid down an experimental plot with periodic irrigation for the testing of upland samples of rice developed in ARRIGC, ARRIOA and ARRIR and for selection of the most stable and productive forms