scholarly journals PEGADA HÍDRICA DO ARROZ CULTIVADO SOB DIFERENTES MANEJOS DE IRRIGAÇÃO

Irriga ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 248-263
Author(s):  
EMANUELE BAIFUS MANKE ◽  
ARYANE FARIAS DOS SANTOS ◽  
MARÍLIA ALVES BRITO PINTO ◽  
JOSÉ MARIA BARBART PARFITT ◽  
ADILSON LUÍS BAMBERG ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Water Footprint ◽  
Agricultural Research ◽  
Irrigation Management ◽  
Temperate Climate ◽  
Irrigated Rice ◽  
Continuous Irrigation ◽  
Cropping Season ◽  
Cropping Seasons ◽  
Rice Water

PEGADA HÍDRICA DO ARROZ CULTIVADO SOB DIFERENTES MANEJOS DE IRRIGAÇÃO     EMANUELE BAIFUS MANKE1; ARYANE FARIAS DOS SANTOS2; MARÍLIA ALVES BRITO PINTO²; JOSÉ MARIA BARBART PARFITT3; ADILSON LUÍS BAMBERG3 E LESSANDRO COLL FARIA2   1Doutora em Ciências, Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, UFPel. Capão do Leão, RS, Brasil, [email protected] ²Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, UFPel. Pelotas, RS, Brasil, [email protected]; [email protected]; [email protected] 3Embrapa Clima Temperado, Empresa Brasileira de Pesquisa Agropecuária, Embrapa, Pelotas, RS, [email protected]; [email protected]     1 RESUMO   O arroz é um dos cereais mais produzidos e consumidos no mundo. O manejo da água na orizicultura é complexo, sendo os estudos acerca da pegada hídrica do arroz menos frequentes em relação a outras culturas. O objetivo deste trabalho foi estimar de forma simplificada a pegada hídrica do arroz irrigado por aspersão e inundação sob diferentes manejos de irrigação, adotando como base a metodologia tradicional de estimativa da pegada hídrica. Os dados utilizados são provenientes de dois experimentos conduzidos na Estação Experimental Terras Baixas, Empresa Brasileira de Pesquisa Agropecuária (Embrapa) Clima Temperado, Capão do Leão, RS, Brasil. No Experimento 1 foram analisados três manejos de irrigação na safra do arroz de 2011/2012 e quatro na safra de 2012/2013. No Experimento 2 foram analisados quatro manejos de irrigação nas safras 2015/2016 e 2016/2017. Os manejos nas tensões de 20 e 10 kPa (aspersão) e por irrigação contínua (inundação) apresentaram menor pegada hídrica simplificada. Comparando-se a irrigação por aspersão e inundação, concluiu-se que na inundação, o manejo de irrigação contínua resultou em uma pegada hídrica simplificada menor.   Palavras-chave: Oryza sativa, métodos de irrigação, inundação, aspersão     MANKE, E. B.; SANTOS, A. F. dos; PINTO, M. A. B.; PARFITT, J. M. B.; BAMBERG, A. L.; FARIA, L. C. WATER FOOTPRINT OF RICE CULTIVATED UNDER DIFFERENT IRRIGATION MANAGEMENTS     2 ABSTRACT   Rice is one of the most produced and consumed cereals in the world. The water management in rice farming is complex, and studies on the rice water footprint are less frequent than other cultures. The objective was to estimate the simplified water footprint of a sprinkler and flood-irrigated rice under different irrigation management, taking as model the traditional methodology of water footprint estimation. The raw data used are from two experiments performed using rice in the “Terras Baixas”, Experimental Station, Brazilian Agricultural Research Corporation (Embrapa) Temperate Climate, located in Capão do Leão, RS, Brazil. In Experiment 1, three irrigation management applied in the rice cropping season of 2011/2012 and four in the cropping season of 2012/2013 were analyzed. In Experiment 2, four irrigation managements in the 2015/2016 and 2016/2017 cropping seasons were evaluated. The irrigation managements in the tensions of 20 and 10 kPa (sprinkler) and continuous irrigation (flood) presented smallest simplified water footprint. Comparing sprinkler and flood irrigation, it can be concluded that the flood method, under continuous irrigation, resulted in a smallest simplified water footprint.   Keywords: Oryza sativa, irrigation methods, flooded, sprinkler

scholarly journals Evaluation of Lentil Genotypes (Lens culinaris Medikus) for Growth and Yield Performances across Climate Conditions of Central Highlands of Ethiopia

2018 ◽  
Vol 6 (11) ◽  
pp. 1575
Author(s):  
Nano Alemu Daba ◽  
Eba Muluneh Sorecha
Keyword(s):  
Seed Yield ◽  
Agricultural Research ◽  
Global Climate ◽  
Block Design ◽  
Genotypic Variation ◽  
Growth And Yield ◽  
Research Centre ◽  
Cropping Season ◽  
Central Highlands ◽  
Cropping Seasons

Lentil crop has largely been affected by global climate changing, particularly, due to rainfall and temperature changing and variability. Hence, the experiment was conducted in Central Highlands of Ethiopia, namely Akaki, Chefe Donsa and Bishoftu Agricultural Research Centre, in the 2009 and 2010 cropping seasons to assess the genotypic variation of lentil for growth and yield performances. Five lentil genotypes viz. 87S-93549 X EL-103-16, 87S-93549 X EL-103-9-1, Alemaya X FLIP 88-41L-02-AK-14, Alemaya X FLIP 88-41L-02-AK-6 were arranged in randomized complete block design with four replications at all locations. The result of study revealed that the genotype 87S-93549 X EL-103-9-1 produced the highest seed yield of 1985.90 and 2500.00 kg ha-1 during 2009 and 2010 cropping seasons, respectively, at Akaki. On the other hand, the genotype Alemaya X FLIP 88-41L-02-AK-14 gave the highest seed yield (4189.1 kg ha-1) at Chefe Donsa in 2009 cropping season. The genotype X FLIP 88-41L-02-AK-14 was found to be the earliest in physiological maturity, accounting 128.75 days, and the genotype 87S-93549 X EL-103-9-1 had yield advantage of 27.6% over the local check at Chefe Donsa in the 2010 cropping season. Generally, all lentil genotypes were performed better at Chefe Donsa, followed by at Akaki and Bishoftu locations during both cropping seasons. Rainfall and temperature conditions have enormous influences on the growth and yields performances of lentil genotypes at all research locations. The study inspires other studies to be conducted on other factors than climate events thwarting the production of lentil crops in the study areas.

Effects of Rhizobium inoculation and cropping systems on macronutrients uptake and partitioning in two legumes (Common bean and Lablab)

2017 ◽  
Vol 51 (03) ◽  
Author(s):  
Prosper I. Massawe ◽  
Kelvin M. Mtei ◽  
Linus K. Munishi ◽  
Patrick A. Ndakidemi
Keyword(s):  
Agricultural Research ◽  
Cropping Systems ◽  
Block Design ◽  
Lablab Purpureus ◽  
Rhizobium Inoculation ◽  
Plant Parts ◽  
Cropping Season ◽  
Whole Plant ◽  
Randomized Complete Block Design ◽  
Cropping Seasons

The study to investigate the effect of Rhizobium inoculation and cropping systems on the uptake of macronutrients in shoot, root and whole plant of Phaseolus vulgaris and Lablab purpureus was conducted at Selian Agricultural Research Institute (SARI) for two cropping seasons. A randomized complete block design was used in a 3-factorial arrangement with two levels of Rhizobium (with and without rhizobia), two legumes (P. vulgaris and L. purpureus) and five cropping systems (sole maize or sole legumes, 1 row maize to 1 row legumes (1:1) i.e. 0 m or 0.45 m of legume from maize row, 1 row maize to 2 rows of legumes (1:2) i.e. 0.1 m or 0.2 m of legumes from maize rows). The result showed that Rhizobium inoculation significantly (P£0.001) increased the uptake of N, P, K, Ca and Mg in the plant parts and whole plant. Similarly, cropping systems significantly (P£0.001) increased the uptake of N, K and Mg in shoots and whole plant of P. vulgaris and L. purpureus but decreased the P and Ca content in roots. Legumes significantly increased the uptake of the macronutrients in shoots and roots but more nutrients concentration in shoots than roots for both cropping seasons. There were significant (P£0.001) interaction between; Rhizobium x legumes x cropping systems on whole plant uptake of N in cropping season 1 and 2. Regardless of the type of interaction, inoculated legumes maximized the uptake of macronutrients in shoots, roots and whole plant.

scholarly journals An assessment of water footprint for irrigated rice in Punjab

2021 ◽  
Vol 23 (1) ◽  
pp. 21-29
Author(s):  
B.S. SIDHU ◽  
RAKESH SHARDA ◽  
SANDEEP SINGH
Keyword(s):  
Heavy Rainfall ◽  
Water Footprint ◽  
Irrigation Management ◽  
Economic Security ◽  
Green Water ◽  
Crop Evapotranspiration ◽  
Total Water ◽  
Irrigated Rice ◽  
On Farm ◽  
Agroclimatic Zones

Water scarcity has become one of the highest risks for environmental and economic security worldwide. The water footprint for rice production, i.e., the total volume of freshwater consumed to produce a unit quantity rice has been estimated for three different agroclimatic zones of Punjab for the years 2000 to 2017. The results revealed that effective rainfall (Peff) improved in later years due to a change in crop calendar,legally enforced by an Act prohibiting the transplanting of paddy before a specified date. During the period of study, minimum crop evapotranspiration (ETc) was 4645 and maximum was ETc of 9511 m3ha-1 during 2014 and 2011, respectively. The green water footprint (WFgreen) for rice varied from 646litreskg-1of rice during low rainfall years (2012) to 1149 litre kg-1 of rice during heavy rainfall (1192 mm) during 2011.Out of a total water footprint (WFtotal) of 2650 litre kg-1, the share of blue water footprint (WFblue) was higher 1804 litre kg-1 (68%), indicating a need to improve on-farm irrigation management to conserve water resources.

Lowland Rice Yield as Affected by Straw Incorporation and Inorganic Fertilizer Over Cropping Seasons in Fluvisol

2014 ◽  
Vol 3 (1) ◽  
pp. 129-141
Author(s):  
Brahima Koné ◽  
Zadi Florent ◽  
Gala bi Trazié Jeremie ◽  
Akassimadou Edja Fulgence ◽  
Konan Kouamé Firmin ◽  
...  
Keyword(s):  
Grain Yield ◽  
Rice Variety ◽  
Mineral Fertilizer ◽  
Lowland Rice ◽  
Inorganic Fertilizer ◽  
Cropping Season ◽  
Significant Difference ◽  
Straw Incorporation ◽  
Cropping Seasons ◽  
Fertilizer Effect

Grain yield stabilization of lowland rice over cropping seasons was explored using different compositions of inorganic fertilizers (NPK, NPKCa, NPKMg, NPKZn, NPKCaMg, NPKCaZn and NPKCaMgZn) and straw incorporation (3, 6, 9, 12 and 15 tha-1 ). No fertilizer and no straw amended plot was the control in a split-plot design with three replications laid in a Fluvisol of Guinea savanna in Centre Cote d’Ivoire. Three weeks old nursery rice variety NERICA L19 was transplanted. No significant difference of grain yield was observed between the different treatments excluding the highest yields recorded for treatments NPKMg (5.09 tha-1 ), NPKZn (5.15 tha-1 ) and NPKCaéMg (5.31 tha-1 ) compared with 12 (3.95 tha1 ) and 15 tha-1 (4.14 tha-1 ) as straw rates respectively. Grain yield declining trend was more pronounced for mineral fertilizer treatments showing twice greater depressive effect of cropping cycle compared with the straw especially, for treatments characterized by highest grain yield in the first cropping season and similar grain yields were recorded for both sources of nutrient in the third cropping cycle. Of slowness of nutrients releasing by straw, highest grain yield was expected for this soil amender within a longer period of cultivation whereas, unbalance soil micronutrients should be relevant to studious declining yield under inorganic fertilizer effect. Nevertheless, the straw rate of 12 tha-1 supplying 0.58% of NPK as mineral fertilizer equivalent can be recommended for sustaining lowland rice production in the studied agro-ecosystems unless for three cropping seasons.

scholarly journals Seed Yam Production Using High-Quality Minitubers Derived from Plants Established with Vine Cuttings

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 978
Author(s):  
Beatrice Aighewi ◽  
Norbert Maroya ◽  
Lava Kumar ◽  
Morufat Balogun ◽  
Daniel Aihebhoria ◽  
...  
Keyword(s):  
Block Design ◽  
Research Station ◽  
International Institute ◽  
Tropical Agriculture ◽  
Single Node ◽  
Cropping Season ◽  
Randomized Complete Block Design ◽  
The World ◽  
Cropping Seasons ◽  
Set Up

Yam (Dioscorea spp.) is a valuable food security crop in West Africa, where 92% of the world production occurs. The availability of quality seed tubers for increased productivity is a major challenge. In this study, minitubers weighing 1, 3, and 5 g produced from virus-free single-node vine cuttings of two improved yam varieties (Asiedu and Kpamyo) growing in an aeroponics system were assessed for suitability in seed production at a population of 100,000 plants ha−1. A 3 × 2 factorial experiment with randomized complete block design and three replications was set up during the cropping seasons of 2017 to 2019 at the International Institute of Tropical Agriculture Research Station in Kubwa, Abuja, Nigeria. Results showed field establishments of 87%–97.8%. Yields differed with minituber size, variety, and cropping season; the highest was 31.2 t ha−1 in 2019 and the lowest, 10 t ha−1 in 2018 from 5 and 1 g Kpamyo minitubers, respectively. The estimated number of tubers produced per hectare by 1, 3, and 5 g minitubers was 101,296, 112,592, and 130,555, with mean weights per stand of 159.2, 187.3, and 249.4 g, respectively. We recommend using less than 6 g minitubers for seed yam production due to their high multiplication rates.

scholarly journals GROWTH DYNAMICS OF SESAME CULTIVARS

2018 ◽  
Vol 31 (4) ◽  
pp. 1062-1068
Author(s):  
Rayanne Maria Paula Ribeiro ◽  
José Ricardo Tavares de Albuquerque ◽  
Manoel Galdino dos Santos ◽  
Aurélio Paes Barros Júnior ◽  
Leilson Costa Grangeiro ◽  
...  
Keyword(s):  
Block Design ◽  
Growth Dynamics ◽  
Plant Performance ◽  
Physiological Processes ◽  
Cropping Season ◽  
Physiological Indexes ◽  
Crop Cycle ◽  
Beginning Of Flowering ◽  
Cropping Seasons ◽  
Physiological Complexity

ABSTRACT Sesame is a plant with high morphological and physiological complexity, with great variability in growth habit. Quantitative growth analysis is an accessible and accurate tool for evaluating plant development and the contribution of different physiological processes to plant performance. In view of this, the purpose of this study was to evaluate the growth of sesame cultivars in two cropping seasons in the conditions of Mossoró-RN. Two experiments were conducted in Horta Didactics of UFERSA. The experimental delineation in each time was a randomized complete block design with four replications. The treatments were arranged in split plots where each experimental plot contained different sesame cultivars, CNPA G2, CNPA G3 and CNPA G4, and the subplots represented seven collection times, 21, 35, 49, 63, 77, 91 and 105 days after sowing (DAS). The growth of the sesame cultivars was slow at the beginning of the crop cycle, intensifying at the beginning of flowering (after 35 DAS). Among the physiological indexes studied, CNPA G4 cultivar was more efficient in relation to growth and varied depending on the cropping season.

scholarly journals Hill drop sowing of soybean with different number of plants per hole

2018 ◽  
Vol 48 (5) ◽  
Author(s):  
Esmael Lopes dos Santos ◽  
Victor José Agassi ◽  
Alessandro Sartor Chicowski ◽  
Julio Cezar Franchini ◽  
Henrique Debiasi ◽  
...  
Keyword(s):  
Plant Density ◽  
Block Design ◽  
Agronomic Performance ◽  
Soybean Cultivars ◽  
Lack Of Information ◽  
Cropping Season ◽  
Randomized Complete Block Design ◽  
Cropping Seasons

ABSTRACT: In the last few cropping seasons, some soybean producers have tested the application of a hill drop sowing method, usually from three to four seeds every 30 to 40cm. However, there is a lack of information in the literature about the effect of this practice on soybean performance. Thus, the objective of this study was to evaluate the effect of a hill drop sowing with different number of plants per hole on soybean performance. The study was conducted in Londrina - PR, Brazil, during the 2013/14, 2014/15 and 2016/17 cropping seasons. The experiment was a randomized complete block design with four replications and a 2x5 factorial scheme. The first factor consisted of two soybean cultivars, BRS 359RR and NK 7059RR analyzed in the first two cropping seasons and BRS 359RR and BRS 1010IPRO in the last cropping season. The second factor was constituted by five in-hill hole-spacing treatments (HS) (8, 16, 24, 32 and 40cm), with rows spaced 50cm apart. To maintain the same plant density in all treatments (270,000 plants ha-1), sowing was performed manually, being then thinned out. After thinning, the distribution was one plant per hole at HS8, 2 plants at HS16, 3 plants at HS24, 4 plants at HS32, and 5 plants at HS40. The agronomic performance of soybean in hill drop sowing with different number of plants per hole is similar to that of an equidistant distribution of plants.

Application of fuzzy logic for adaptability and stability studies in flood‐irrigated rice ( Oryza sativa )

2021 ◽  
Author(s):  
Antônio Carlos Silva Júnior ◽  
Michele Jorge Silva ◽  
Weverton Gomes Costa ◽  
Ithalo Coelho Sousa ◽  
Cosme Damião Cruz ◽  
...  
Keyword(s):  
Fuzzy Logic ◽  
Oryza Sativa ◽  
Stability Studies ◽  
Irrigated Rice

scholarly journals Effect of cropping system and age of plant at harvest on tuber rot and performance of elite cassava varieties in derived savannah

2017 ◽  
Vol 109 (2) ◽  
pp. 165
Author(s):  
Joy N Odedina ◽  
Sunday Ojo Adigbo ◽  
Peter Kulako ◽  
Peter Iluebbey ◽  
Thomas O Fabunmi ◽  
...  
Keyword(s):  
Tuber Yield ◽  
Block Design ◽  
Cropping System ◽  
Improved Varieties ◽  
Cropping Season ◽  
Cropping Seasons ◽  
Rot Disease ◽  
And Performance ◽  
Tuber Rot ◽  
Cassava Varieties

Devastated tuber rot disease among farmers prompted the evaluation of the elite improved varieties in the intercrop and the practice of delaying harvesting when there is glut in the market necessitated this study. Trial was carried out at the Federal University of Agriculture, Abeokuta between 2011 and 2014 to evaluate yield performance of 21 elite cassava varieties planted as sole crop verse intercropped and harvested at different age. The 2 x 21 x 3 factorial experiment was laid out in randomized complete block design and replicated three times. The tuber yield obtained from sole plot in 2011/2012 cropping season was significantly higher than intercrop whereas those of 2012/2014 cropping season were similar. Land Equivalent Ratio was above one in both cropping seasons indicating that the performance of the improved varieties in intercrop was efficient. The pooled mean tuber yield showed that TMS 30572, 92/0326, 95/0211, 01/1371, 00/0338, 01/0046, 00/0098, 01/1097, 01/0085, 98/0581 and 98/510 were among the top eight varieties. Harvesting could be delayed up to 15 months after planting to reduce tuber rot.

Water Footprint Accounting for Improving Irrigation Management in Olive Trees

2018 ◽  
pp. 61-72 ◽  
Author(s):  
R. González Perea ◽  
J. García Morillo ◽  
Juan A. Rodríguez Díaz ◽  
Pilar M. Barrios ◽  
Emilio C. Poyato
Keyword(s):  
Water Footprint ◽  
Irrigation Management ◽  
Olive Trees
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