planting time
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2022 ◽  
Vol 3 (1) ◽  
pp. 01-07
Author(s):  
Gusti Rusmayadi ◽  
Umi Salawati ◽  
Dewi Erika Adriani

The determining factor for the success of agricultural cultivation in tidal swampland is water availability, which fluctuates throughout the plant's growth. The availability of water for oranges has a significant role in the final production of the product. In Indonesia, there are three types of rain patterns with variations in the growing season related to water availability: the rainy season between October and March and the dry season between April and September. Climate extremes such as drought (El-Niño) and wetness (La-Niña) fluctuate dynamically, impact shifts at the beginning and end of the growing season, and hurt citrus crop productivity. Therefore, an analysis of rice planting time in tidal swampland in Barito Kuala under extreme climatic events was carried out. The research was conducted in September – December 2020 with the survey method. The data was dug in-depth on the research respondents: citrus farmers, fruit traders, and related agencies. The number of samples was 90 people (45 male farmers and 45 female farmers). Two different villages were surveyed in each sub-district according to the type of tidal land, namely Marabahan sub-district (SP1 village and SP2 village), type A, Mandastana (Karang Indah village and Karang Bunga village) type B, and Cerbon sub-district. (Village of Simpang Nungki and Sungai Kambat) Type C. Planting time in tidal land begins after the amount of rainwater is sufficient to dissolve the iron content in the water. The probability of an El-Niño occurrence with an intensity of 1, 2, 3, and 4 years has the highest frequency of occurrence—respectively 3, 3, 5, and 3 times with probability around 16.7% to 27.8%. Meanwhile, La-Nia with an intensity of once a year with the highest frequency eight times with a 40.0% chance. La-Nia events coexist with El-Nio 15 times, and generally, El-Nio precedes La-Nia by about 44%. The cropping pattern in tidal swampland shows high resistance to climate change. Namely, the planting time has not changed much for decades under different climatic conditions.


2021 ◽  
Vol 6 (4) ◽  
pp. 453-458
Author(s):  
Shreejana K.C

The research was conducted on the field of Chagunarayan municipality (Tathali) from 23rd March to 17th June 2020 to observe the effect date of transplanting on attributing character of tomato Genotype.  23rd March, 6th April, 21st April, and 6th May are the four sowing dates laid out in the RCBD design with three replications. And the data were observed in 10 days intervals for each planting time. The attributing character like plant height, leaf number, no of branches shows positive impact for early shown plant species, and development for later sowing date shows decreasing result. Therefore, the species planted before the planting time is beneficial from an economic point of view where the plant shows a positive growth rate on attributing character, and it can be considered for further research programs as well.


2021 ◽  
Vol 939 (1) ◽  
pp. 012044
Author(s):  
A J Shokirov ◽  
S S Lapasov ◽  
K J Shokirov

Abstract At present, scientific research is underway to further develop vegetable growing in the secondary crop, in particular to further increase the yield and quality of white cabbage, to select a system of planting time-sowing scheme that maximizes the biological productivity of varieties, and to apply the most optimal standards of fertilization and irrigation. In this regard, the urgent task remains to determine the optimal varieties of cabbage that can be grown in repeated crops, their optimal planting scheme, timing, development and implementation of optimal standards for each variety of mineral fertilizers and irrigation, and its solution is large-scale throughout the country. Besides that a number of problematic issues are addressed, which could allow to get high and high-quality harvest of white cabbage in repeated sowing in grain-free areas.


2021 ◽  
Vol 13 (23) ◽  
pp. 4785
Author(s):  
Hao Fu ◽  
Wei Zhao ◽  
Qiqi Zhan ◽  
Mengjiao Yang ◽  
Donghong Xiong ◽  
...  

Afforestation is one of the most efficient ways to control land desertification in the middle section of the Yarlung Zangbo River (YZR) valley. However, the lack of a quantitative way to record the planting time of artificial forest (AF) constrains further management for these forests. The long-term archived Landsat images (including the Thematic Mapper (TM), Enhanced Thematic Mapper Plus (ETM+), and Operational Land Imager (OLI)) provide a good opportunity to capture the temporal change information about AF plantations. Under the condition that there would be an abrupt increasing trend in the normalized difference vegetation index (NDVI) time-series curve after afforestation, and this characteristic can be thought of as the indicator of the AF planting time. To extract the indicator, an algorithm based on the Google Earth Engine (GEE) for detecting this trend change point (TCP) on the maximum NDVI time series within the growing season (May to September) was proposed. In this algorithm, the time-series NDVI was initially smoothed and segmented into two subspaces. Then, a trend change indicator Sdiff was calculated with the difference between the fitting slopes of the subspaces before and after each target point. A self-adaptive method was applied to the NDVI series to find the right year with the maximum TCP, which is recorded as the AF planting time. Based on the proposed method, the AF planting time of the middle section of the YZR valley from 1988 to 2020 was derived. The detected afforestation temporal information was validated by 222 samples collected from the field survey, with a Pearson correlation coefficient of 0.93 and a root mean squared error (RMSE) of 2.95 years. Meanwhile, the area distribution of the AF planted each year has good temporal consistency with the implementation of the eco-reconstruction project. Overall, the study provides a good way to map AF planting times that is not only helpful for sustainable management of AF areas but also provides a basis for further research on the impact of afforestation on desertification control.


Author(s):  
Lê Thị Thu Hường ◽  
Vũ Tuấn Minh

Nghiên cứu được thực hiện trong vụ Xuân Hè tại trường Đại học Nông Lâm, Đại học Huế nhằm xác định được thời vụ thích hợp cho sinh trưởng, phát triển của nấm Trân Châu tại Thừa Thiên Huế. Thí nghiệm được bố trí theo phương pháp hoàn toàn ngẫu nhiên (CRD), gồm 5 công thức với 5 thời điểm cấy giống khác nhau trong tháng 4 và tháng 5 là 1/4; 10/4; 20/4; 30/4 và 10/5, 3 lần lặp lại, mỗi lần lặp theo dõi 10 bịch. Kết quả cho thấy công thức I, thời điểm cấy giống vào 1/4 cho kết quả tốt nhất. Thời gian phủ kín nguyên liệu 43,26 ngày, thời gian xuất hiện quả thể 57,53 ngày và thời gian quả thể trưởng thành và thu hái 65,87 ngày. Chiều dài quả thể đạt 10,69 cm, đường kính quả thể 3,99 cm và trọng lượng quả thể đạt 90,28 g/cụm quả thể, không xuất hiện mẫu nhiễm. Năng suất đạt 225,70 kg/ tấn nguyên liệu khô dẫn đến lãi ròng thu được 13,92 triệu đồng, cao hơn so với các công thức cùng nghiên cứu. ABSTRACT The experiment was carried out during the Summer-Autumn season at University of Agriculture and Forestry, Hue University to determine the suitability of planting time for the growth performation of Southern Poplar mushroom in Thua Thien Hue province. The experiment was arranged in completely randomized design, including 5 treatments, which were 5 different seedling propagation times of April 1st; April 10th; April 20th; April 30th and May 10th in 3 replications and 10 monitoring bags per each replication. The results showed that the experimental treatment I, which were inoculation time on April 1st, gave the best results compared to other experimental treatment such as the time mycelium covered material at 43.26 days; The time to appear mushroom body reached 57.53 days and the time to mature and harvest of mushroom body was 65.87 days; The length of the mushroom body at 10.69cm, the mushroom body diameter at 3.99cm and the weight of the mushroom body gave 90,28 g/mushroom cluster; infection rate gave 0%. The yield was 22.57% compared to the volume of dry material led to the net profit got 13,92 million VND, higher than all of treatments in the same study.  


2021 ◽  
pp. 1-20
Author(s):  
Nikola Arsenijevic ◽  
Ryan DeWerff ◽  
Shawn Conley ◽  
Matthew Ruark ◽  
Rodrigo Werle

The role of weed suppression by the cultivated crop is often overlooked in annual row cropping systems. Agronomic practices such as planting time, row spacing, tillage and herbicide selection may influence the time of crop canopy closure. The objective of this research was to evaluate the influence of the aforementioned agronomic practices and their interaction with the adoption of an effective preemergence (PRE) soil residual herbicide program on soybean canopy closure and yield. A field experiment was conducted in 2019 and 2020 at Arlington, WI as a 2×2×2×2 factorial in a randomized complete block design, including early (late-April) and standard (late-May) planting time, narrow (38 cm) and wide (76 cm) row spacing, conventional tillage and no-till, and soil-applied PRE herbicide (yes and no; flumioxazin 150 g ai ha−1 + metribuzin 449 g ai ha−1 + pyroxasulfone 190 g ai ha-1). All plots were maintained weed-free throughout the growing season. In both years, early planted soybeans reached 90% green canopy cover (T90) before (7 to 9 d difference) and yielded more (188 to 902 kg ha−1 difference) than the standard planted soybeans. Narrow-row soybeans reached T90 earlier than wide-row soybeans (4 to 7 d difference), but yield was similar between row spacing treatments. Conventional tillage had a higher yield when compared to a no-till system (377 kg ha−1 difference). The PRE herbicide slightly delayed T90 (4 d or less) but had no impact on yield. All practices investigated herein influenced the time of soybean canopy closure but only planting time and tillage impacted yield. Planting soybeans earlier and reducing their row spacing expedites the time to canopy closure. The potential delay in canopy development and yield loss if soybeans are allowed to compete with weeds early in the season would likely outweigh the slight delay in canopy development by an effective PRE herbicide.


Author(s):  
J. Rhonben ◽  
Syed H. Mazhar ◽  
Jahanara Jahanara

The study was conducted to examine the technological gap in recommended cultivation practices of pineapple in Dimapur district of Nagaland. A total of 120 respondents were personally interviewed by the researcher using a pre-tested interview schedule. The result of technological gap revealed that the highest (100%) technological gap was found in recommended practices like planting time, treatment of planting materials, manure and fertilizers, intercultural operations, growth regulators and Insect Disease Management. And the lowest was found in recommended varieties with 0% technology gap.


Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1647
Author(s):  
Sunil Kumar ◽  
Mounir Louhaichi ◽  
Palsaniya Dana Ram ◽  
Kiran Kumar Tirumala ◽  
Shahid Ahmad ◽  
...  

Study of appropriate planting time and response to agronomic management practices is imperative for the newly introduced cactus pear (Opuntia ficus-indica (L.) Mill.) into a semi-arid region of India. Responses of cactus pear to agronomic practices (planting time, and irrigation and fertilizer application) were evaluated to determine the potential for fodder production and livestock feed in a semi-arid environment of India. We assessed four planting times (February, March, July, and October) and two agronomic managements (with and without irrigation and fertilizer application) during 2016–2020 at Jhansi, India. Cactus pear establishment and growth improved with planting time in July and October due to favorable soil moisture and congenial temperature. However, plant height (19 cm) and cladode weight (118 g) were greater in July than in October planting. Nutrient uptake and crude protein contents, however, were higher for the earlier plantings of February and April compared to June and October. Irrigation and nutrients application had little effect on the cactus pear plant growth, except on plant width and cladode length and width. Cactus pear can be planted during July in moderately fertile soils without any agronomic intervention in semi-arid situations of India and has potential as an effective alternative source of forage for livestock during the summer months.


Irriga ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 308-320
Author(s):  
Andre Felipe Barion Alves Andrean ◽  
Roberto Rezende ◽  
Gustavo Soares Wenneck ◽  
Anderson Takashi Hara ◽  
Claudia Salim Lozano Menezes ◽  
...  

ASPECTOS AGRONÔMICOS DA FORMAÇÃO DA INFLORESCÊNCIA DA COUVE-FLOR SOB DIFERENTES CONDIÇÕES HÍDRICAS     ANDRE FELIPE BARION ALVES ANDREAN1; ROBERTO REZENDE2; GUSTAVO SOARES WENNECK 1; ANDERSON TAKASHI HARA1; CLAUDIA SALIM LOZANO MENEZES1 E DANIELE DE SOUZA TERASSI1   1Discente do Programa de Pós-graduação em Agronomia, Universidade Estadual de Maringá (UEM), Av. Colombo, 5790, Zona 7, CEP:87020-900, Maringá, Paraná, Brasil. E-mail: [email protected]; [email protected]; [email protected]; [email protected]; [email protected] 2Professor do Departamento de Agronomia, Universidade Estadual de Maringá (UEM), Av. Colombo, 5790, Zona 7, CEP:87020-900, Maringá, Paraná, Brasil. E-mail: [email protected]     1 RESUMO   Compreender o comportamento da couve-flor em diferentes condições de disponibilidade hídrica pode ser uma importante ferramenta de auxílio ao produtor, que poderá tomar as melhores decisões quanto a época de plantio e a escolha da cultivar, além disto, mesmo que os materiais vegetais possuam a mesma classificação de época de plantio e sazonalidade, o desempenho e os meios fisiológicos de produção muitas vezes não são os mesmos. Objetivou-se avaliar os aspectos agronômicos da formação da inflorescência de duas cultivares de couve-flor, em ambiente protegido, sob diferentes níveis de irrigação com base na aferição de sua evapotranspiração. O arranjo experimental foi em blocos casualizados, com quatro repetições, em esquema fatorial de 2 x 3, sendo dois híbridos e três regimes hídricos. Houve resposta significativa do fator híbrido Barcelona e as diferentes lâminas de irrigação para a variável massa fresca da inflorescência. O híbrido Viena apresentou melhor desempenho produtivo, não variando sua massa fresca de inflorescência mesmo com as alterações de disponibilidade hídrica. A massa fresca das folhas possui forte correlação com a massa fresca da inflorescência, principalmente, para o híbrido Barcelona. O número de folhas acima de 15 contribui positivamente para o crescimento do diâmetro da inflorescência em couve-flor.   Palavras-chave: Brassica oleracea var.botritys, lâminas de irrigação, fonte-dreno.     ANDREAN, A. F. B. A.; REZENDE, R.; WENNECK, G. S.; HARA, A. T.; MENEZES, C. S. L.; TERASSI, D. S. AGRONOMIC ASPECTS OF THE FORMATION OF THE INFLORESCENCE OF CAULIFLOWER UNDER DIFFERENT WATER CONDITIONS     2 ABSTRACT   Understanding the behavior of cauliflower under different water availability conditions can be an important tool to assist farmers, that will be able to make the best decisions regarding the planting time and the choice of the cultivar, in addition, even if the plant materials have the same classification of planting time and seasonality, performance and physiological means of production are often not the same. The objective was to evaluate the agronomic aspects of the formation of the inflorescence of two cauliflower cultivars, in a greenhouse under different levels of irrigation based on the measurement of their evapotranspiration. The experimental arrangement was in randomized blocks with four replications in a 2 x 3 factorial scheme, two hybrids and three water regimes. There was a significant response from the hybrid factors Barcelona and the different irrigation depths for the variable fresh mass of the inflorescence. The Viena hybrid showed better productive performance, with its fresh inflorescence mass not varying even with changes in water availability. The fresh weight of the leaves has a strong correlation with the fresh weight of the inflorescence, mainly for the Barcelona hybrid. The number of leaves above 15 contributes positively to the growth of the diameter of the cauliflower inflorescence.   Keywords: brássica olerácea var. botritys, irrigationplates, souce-sink.


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