Identifikasi Serangan Serangga Hama di Pertanaman Padi (Oryza Sativa L.) di Lahan Persawahan Tinggarjaya

Rice crops is included into the family of Graminae that produces seeds from China. Rice Plant is the crops that produce rice, consumed approximately by 90 % from the whole citizens of Indonesia as the main food. This study aims to identify indect pest attacks in rice plantations in Tinggarjaya rice fields. From the results of the research that has been carried out, various kinds of insect pests were found in the Tinggarjaya rice fields. The main pests found were brown planthopper (N. Iguens), rice bug (Leptocorixa acuta), green grasshopper (Oxya serville), ground bedbug (Scotinophara coarctata F.), seed fly (Atherigona exigua), false white pest (Nymphula depunctalis guene), and green grasshopper (Atractomorpha crenulata). Each pest a different population density. Not all pests can be found at every stage of rice plant growth. The largest pest population was found in the generative stage.

The correlation of variable affecting yield on anthocyanins corn

Variable importance under vegetative and generative stage for effecting of grain yield opv anthocyanins corn. Simple correlation and regression analysis has been conducted between grain yield as dependent variable (yi) with all independent variable (xi, i: 1,2,3,…,6) as vegetative and generative stage. Stepwise of multiple regression was be used for define of variable was more important to affecting of yield.The experiment were conducted in Maros and Bajeng experimental farm on rainy 2017, data has been collected as sample from 30 plants per se. Two blocks of experiment 17x25m were planting of with spacing 75x20 cm one plant per hole, length of plot 15 m. Fertilizer be applied with Urea-Ponska (300-200) kg/ha. Anthocyanin’s corn held to increase of human health. The origin of anthocyanins corn is from Mesoamerica it is a pigment that give color of purple to black may affect to anticipated of viral (virus), cholesterol, heart disease, obesity, and cancerThe result multiple regression shown that variable which is be increase of yield and significant different founded in Maros were plant height (x1), water content of seeds (x2), and ear height. (x5). Model: y:3.404+0.027x1+0.018x2-0.073x5, R2:0.645. In Bajeng shown that water content of seeds (x5), number of seeds per cob (x7), and 1000 seeds (x8), Model was yi=4.096-1.776x5+0.087x7+0.023x8; R2:0.92. In The two-location yield, be decrease if water content of seed was increase.

Effect of different pasture legumes on growth profile and forage production of the selected native pasture grasses mix at different growth stages

The present experiment aimed to investigate the effect of introducing different pasture legumes on the growth profile and forage production of the selected native pasture grass species at different stages of growth. In a completely randomized design with 5 treatments and 5 replications, the mixture of Sorghum plumosum (SP) and Bothriochloa pertusa (BP) was introduced respectively with one of the forage legumes ie. Alysicarpus vaginalis (AV), Pueraria phasoloides (PP), Desmodium incanum (DI), and Clitoria ternatea (CT). Growth profile and forage production were measured at 40, 60, and 80 days after planting. Results showed that CT and PP significantly improved the growth and DM production of SP and suppressed (P<0.05) the growth of BP during the early vegetative stage but did not during the late vegetative stage. Introduction of legumes reduced (P<0.05) DM production of SP and the total forage production but improved (P<0.001) the DM production of B. pertusa as well as a leaf:stem ratio of both types of grass at the generative stage. PP had the highest (P<0.05) contribution of legumes to the total DM forage production during early and vegetative stages, meanwhile AV and DI during the generative stage. In conclusion, the introduction of forage legumes did not improve the DM production of both grass species but modify their growth profile toward a better quality as shown by increased leaf:stem ratio. P. phasoloides provide the highest foliage during the vegetative stage and A. vaginalis and D. incanum during the generative stage.

Suppressed Undergrowth of Siberian Spruce (Picea obovata Ledeb.) in Early Ontogeny: One-Way Ticket or Survival Strategy?

The study examined the growth characteristics of the Siberian spruce (Picea obovata Ledeb.) under the canopy of coniferous forests in early ontogeny. We revealed that spruce undergrowth in adverse conditions is suppressed, is slow to grow and has xylorhizomes. The result is a significant difference in height, age and stage of ontogeny that affects the forest’s growth dynamics. The formation of xylorhizomes changes the relative dimensions of the above-ground part and the plant’s absolute height from 42 to 75%, depending on age. We identified two periods of growth intensity (slow and stable) and the critical age for spruce undergrowth to move from one stage of ontogeny to the next. If it does not make the transition, it will die. There are two strategies for developing spruce undergrowth: a “direct” path during rapid growth and a “waiting” path when the plants are suppressed. Such growth pathways in the pre-generative stage of the Siberian spruce’s ontogeny allow the undergrowth, even in a suppressed state, to survive in an adverse environment under the forest canopy.

Colecţia de plante din Familia Arecaceae Sch.-Bip. a Grădinii Botanice Naţionale (Institut) „Alexandru Ciubotaru”

During about 50 years, at the “Al. Ciubotaru” NBGI, the collection of plants of the Arecaceae family has been created and enriched; it currently includes 34 taxa, in 18 genera. Eleven taxa are able to reach the generative stage (flowering), and seven are able to produce fruits with seeds. The palm trees from the collection are propagated by seeds. Palm trees grow apically.

ONTOGENESIS AND AGE STRUCTURE OF THE PULSATILLA MULTIFIDA MILL POPULATIONS IN THE CONDITIONS OF NORTHERN KAZAKHSTAN

The article provides the study results on the age-related stages of Pulsatilla multifida Mill. The materials have been gathered in the course of field research taking into account the literary data. The studies were carried out in the Pavlodar and Akmola regions during the season of mass flowering and seeds ripening (2018-2019). A rosette shoot is formed on the stage of seedlings out of 3-4 leaves of different complexity. On the juvenile stage the rosette shoot is formed out of 4-5(6) leaves. The leaves are tripartite, dissected into large lobes and in their turn are cut into prongs. The root system is represented by a stem-root and many roots of the second order. Immature individuals undergo the formation of an elongated rhizome. Leaf-blades are tripartite with deeply dissected lobes. 1-3 rosette shoots grow from resumption buds. The calendar age of an immature plant is 1-2 years. On the virginal stage, there is an increase of resumption buds and rosette modules, the formation of a powerful rhizome with numerous resumption buds on it. Leaves acquire a specificity: the number of prongs on the leaves becomes narrow, middle leaves develop a petiole of different lengths. Young generative plants have 1-3 peduncles and 1-3 rosette shoots. On average generative stage, the rhizome forms a many-headed caudex with numerous rosette shoots. In old age the number of rosette shoots decreases, the peduncles remain underdeveloped and do not start blooming. The leaves are cut into very narrow lobes with a large number of prongs, while the length of the petiole at the central lobe becomes minimal. In subsenile plants, there is a maceration of rhizomes to a greater depth with the formation of vegetative rosettes on separate parcels and they are represented by a system of dying rhizomes, with single vegetative sockets. The coenopopulations of P. multifida and P. aggr. patens are found in rocky habitats, except CP-1 (a glade between the rocks) where P. multifida grows on a dry meadow among steppe shrubs. All the studied populations are generative, the density of species is high enough to ensure the normal existence of the species in natural conditions.

Effect of Gibberellic Acid on Growing-Point Development of Non-Vernalized Wheat Plants under Long-Day Conditions

The goal of this study was to determine whether the application of gibberellic acid (GA3) to seeds of common wheat varieties with different vernalization and photoperiod requirements affects the transition from vegetative to generative stage. Three varieties of wheat with different photoperiod sensitivities and vernalization were selected for the experiment—the winter varieties, Mironovskaya and Bezostaya, and the spring variety, Sirael. Seeds were treated with different concentrations of GA3 and plants were grown under long-day conditions with monitoring of their photosynthetic activity (Fv/Fm, Pn, E, gs). We monitored the activity of the photosynthetic apparatus by checking the plants to see if they were growing properly. The phenological stages of the wheat species were checked for indications of a transition from the vegetative to the generative stage. Selected concentrations of GA3 had no effect on the compensation of the vernalization process (transition to the generative phase). Chlorophyll fluorescence was one of the factors for monitoring stress. The variety, Bezostaya, is similar to the spring variety, Sirael, in its trends and values. The growth conditions of Bezostaya and Sirael were not affected by the activity of the photosynthetic apparatus. The development of growing points in winter varieties occurred at the prolonged single ridge stage. The spring variety reached the stage of head emergence after sixty days of growth (changes to the flowering phase did not appear in winter wheat). Application of GA3 to the seeds had no effect on the transition of the growing point to the double-ridge generative stage. The present study highlights the priming effect of GA3 on seeds of common wheat varieties with different vernalization and photoperiod requirements as it affected the transition from vegetative to generative stage.

Pollen quality, pollen production and yield of some tomato (Solanum lycopersicum) genotypes under high temperature stress in Eastern Mediterranean

Pollen quality, pollen production and yield of different high temperature tolerant tomato genotypes were evaluated under Adana, Turkey conditions in two different periods. The control treatment (normal sown, where day/night temperatures during the vegetative and generative stage are below 32/20 °C) of the first period started on February 20, 2015. The seedlings in the second period were planted on May 15, 2015. The performances of twenty-four tomato genotypes (resistant and sensitive commercial genotypes) were compared to determine high temperature resistant and sensitive tomato genotypes. Significant relationship was obtained between the yield and the number of pollens. The results of the experiment revealed that ‘Tom173’, ‘Tom119’ and ‘F15656’ genotypes were more resistant, while ‘Tom108’ and ‘Tom10’ genotypes were more sensitive compared to the other tomato genotypes tested in the experiment.

Seleksi Simultan Karakter Daun Mengering dan Produktivitas pada Galur-galur Padi

Drought is an important constraint for rice production in rainfed lowland and shallow freshwater swamp. The area often experiences drought stress at the generative stage of the plants. This study aimed at selecting adaptive lines to terminal drought and formulating a multiple regression model to estimate the productivity under drought stress conditions at the generative stage. The experiment was conducted in a greenhouse of the Indonesian Center for Rice Research, Subang, West Java, using an augmented design with five blocks. The genetic material used was ninety-nine lines and four checks varieties, namely Inpari 30, Limboto, Salumpikit, and IR 20. The model was formulated using stepwise regression analysis. Based on this study, ten lines were adapted to drought stress at the generative stage, namely B13983E-KA-12-2, B13926E-KA-13, B13507E-MR-19, B14366E-KY-50, B14366E-KY-37, IR86384- 46-3-1-B, BP20452e-PWK-0-SKI-1-1, BP20452e-PWK-0-SKI-2-4, BP20452e-PWK-0-SKI-3-3, and BP29790d-PWK-3 -SKI-1-5. The B13507E-MR-19 had the highest productivity (4.02 ton ha-1) under drought stress conditions. Yield under drought stress in the greenhouse could be predicted using a linear regression model involving plant height at early vegetative stage, plant height up to the panicle, tiller number at early vegetative stage, tiller number at late vegetative stage, tiller number at flowering, heading time, number of filled grain, and panicle exsertion length. This model was able to explain 75.92% of yield variation. Potential rice lines and the regression model obtained are expected to contribute to the development of rice varieties adaptive to drought. Keywords: drought tolerant, freshwater swamp, rainfed, regression model

Efektivitas bintil akar kedelai edemame (Glycine max (L.) Merr.) dengan pemberian TKKS di tailing pasir pasca tambang timah

Efektivitas bintil akar kedelai edamame dipengaruhi oleh penggunaan pupuk sebagai sumber energi mikroba. Pemanfaatan kompos tandan kosong kelapa sawit (TKKS) merupakan solusi alternatif pupuk organik. Penelitian ini bertujuan untuk mengetahui pengaruh kompos TKKS terhadap efektivitas bintil akar dan perkembangan fase generatif edamame di tailing pasca tambang timah. Metode penelitian yang digunakan adalah Rancangan Acak Kelompok dengan tiga ulangan. Perlakuan kompos terdiri atas tujuh taraf, yaitu: K0 (tanpa kompos TKKS dan legin), K1 (10 t ha-1), K2 (15 t ha-1), K3 (20 t ha-1), K4 (25 t ha-1), K5 (30 t ha-1)dan Legin. Hasil penelitian penggunaan kompos tandan kosong kelapa sawit dapat meningkatkan efektivitas bintil akar dan perkembangan fase generatif edamame di tailing pasir pasca tambang timah. Persentase bintil akar efektif, jumlah polong dan bobot polong terbanyak pada perlakuan 20 t ha-1. ABSTRACT Edamame soybean nodule effectivity was influenced by the optimalization of fertilizer as a microbial energy sources. Utilization of palm oil empty fruit bunch compost (POEFBC) is an alternative solution for organic fertilizer. This study was to determine the effect of POEFBC on root nodules effectivity and edamame soybean generative stage in sandy tailing post tin mining. Experimental method used Randomized Block Design with three replications. The treatments consist of seven levels i.e. K0 (without POEFBC and legin), K1 (10 t ha-1), K2 (15 t ha-1), K3 (20 t ha-1), K4 (25 t ha-1), K5 (30 t ha-1) and Legin. The results showed that the use of palm oil empty fruit bunches compost can increase the activity of edamame soybean root nodules and develop the generative stage of edamame in sandy tailing post tin mining. The treatment 20 t ha-1 showed the best treatment for the effective percentage of root nodules, number of pods and pod weight.