scholarly journals Acid soil tolerance of 28 soybean varieties in hydroponics and soil-based evaluation

2021 ◽  
Vol 911 (1) ◽  
pp. 012001
Author(s):  
Winda Puspitasari ◽  
Taufiq Bachtiar ◽  
Nur Robifahmi ◽  
Anisiyah ◽  
Muhammad Iqbal
Keyword(s):  
Plant Growth ◽  
Acid Soil ◽  
Block Design ◽  
Genetic Material ◽  
Acid Soils ◽  
Dry Weight ◽  
Plant Response ◽  
Breeding Program ◽  
Soil Conditions ◽  
Growth Evaluation

Abstract Utilization of marginal soil plays important role in improving soybean production in Indonesia. Soybean breeding program targeting high yielding varieties and tolerant to acid soils is estimated to be more cost-effective and environmentally friendly approach in improving plant productivity on acid soil. The aim of this research was to study plant response under acid soil stress and to identify tolerant and sensitive genotype which might be useful for further breeding program. The experiment was conducted using 28 soybean varieties as genetic material. The experiment was carried out in two parts, including seedling evaluation in hydroponics and plant growth evaluation in polybag using acid soil. The first experiment was arranged in factorial randomized block design, consisting of genotype, pH, and AlCl3 treatment as the factors with 5 replications. The second experiment was conducted using randomized complete block design with 5 replications to identify the plant growth in different genotype and acid soil conditions. The results showed that the low pH and high Al inhibits seedlings root growth of soybean genotypes. The estimation of STI from root and shoot dry weight suggests Detam 1 as the most tolerant genotype followed by other varieties with lower level of tolerance. Plant response was different each genotype to both seedling evaluation in hydroponics and plant growth evaluation using acid soil.

scholarly journals Cekaman Garam NaCl danTeknik Aplikasi Azolla pada Tanaman Padi

2020 ◽  
Vol 25 (3) ◽  
pp. 349-355
Author(s):  
Fitri Krismiratsih ◽  
Sugeng Winarso ◽  
Slamerto Slamerto
Keyword(s):  
Salt Stress ◽  
Block Design ◽  
Ground Cover ◽  
Dry Weight ◽  
Soil Conditions ◽  
Application Technique ◽  
Rice Plants ◽  
Root Dry Weight ◽  
Randomized Block Design ◽  
Salinity Levels

Efforts to increase production potential can be carried out by extensification in a less productive saline land. Salinity is a major problem in the growth of most plants. Azolla is a plant that is sensitive to salinity, but if it is applied well, it can grow optimally at high salinity levels. The purpose of this study is to obtain an azolla application technique that is effective in increasing the adaptation of rice plants to NaCl saline soil conditions. The experimental design used was Randomized Block Design (RBD) with 2 factors and 3 replications. The first factor was the azolla application technique consisted of 3 levels: fresh azolla composted, fresh azolla immersed, and fresh azolla as a ground cover. The second factor was the levels of NaCl salt stress consisted of 4 levels: control DHL 0, 2, 4, and 8 dS m-1. The adaptation ability of rice plants based on variable plants height growth rate, number of tillers, strove dry weight, root dry weight, stomata density, leaf chlorophyll (SPAD), age of flowering, number of paddy grain, and harvest index. The results showed how to test content up to 2 dS m-1 which increased rice growth especially the application of azolla composted. Increasing stress to 4 and 8 dS m-1showed bad effects on vegetative, physiology, and yields of rice components. The stronger of salt stress the higher all plants growth variables except the age of flowering that actually showed the acceleration of flowering. Application of composted azolla can increase the root dry weight and azolla as a ground cover can increase the numbers of paddy grains.   Keywords: azolla, NaCl, rice, stress

Response of sweet potato cultivars to acid soil infertility factors. II. Effects of calcium supply and soluble aluminium on early growth

2000 ◽  
Vol 51 (1) ◽  
pp. 29
Author(s):  
V. P. Ila'ava ◽  
C. J. Asher ◽  
F. P. C. Blamey
Keyword(s):  
Sweet Potato ◽  
Acid Soil ◽  
Acid Soils ◽  
Solution Culture ◽  
Potato Cultivars ◽  
Soil Conditions ◽  
Good Growth ◽  
Calcium Supply ◽  
Conventional Solution ◽  
Potato Growth

Good growth in acid soils suggests that sweet potato may be tolerant of acid soil infertility factors such as Al toxicity or Ca deficiency. In a conventional solution culture experiment, 4 cultivars responded positively when solution Ca concentration was increased from approximately 4 to 1300 □М. However, a subsequent flowing solution culture (FSC) experiment showed no significant (P > 0.05) differences in growth by most of the 15 cultivars studied when solution Ca concentration was increased from 45 to 400 □М. Hence, it was concluded that sweet potato could be fairly tolerant of low Ca supply. In contrast, soluble Al markedly decreased growth of the 15 sweet potato cultivars studied. The results of the present study indicate that Al rather than low Ca supply would be more important in limiting sweet potato growth in acid soils. Furthermore, tolerance to low Ca and soluble Al appears to be linked in sweet potato. These results highlight the importance of selecting sweet potato cultivars for specific soil conditions such as soil acidity.

scholarly journals Respons Benih Kakao Terhadap Amelioran, Mikrob Pelarut Fosfat, dan Pupuk Fosfat pada Tanah Masam

2020 ◽  
Vol 7 (1) ◽  
pp. 39
Author(s):  
Kurnia Dewi Sasmita ◽  
Iswandi Anas ◽  
Syaiful Anwar ◽  
Sudirman Yahya ◽  
Gunawan Djajakirana
Keyword(s):  
Acid Phosphatase ◽  
Rice Husk ◽  
Phosphate Rock ◽  
Acid Soil ◽  
Block Design ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Available P ◽  
Growing Media ◽  
Rice Husk Biochar

<em>The growth of cacao in acid soils is commonly limited by some problems such as low available P and pH, and high Al saturation. Therefore, research is needed to solve the problem of coffee cultivation in acid soil. This study aimed to determine the effect of ameliorant, phosphate solubilizing microbes (PSM), and phosphate fertilizers (P) on the growth and nutrient uptake of cacao seedlings, and some acid soil properties. The study used a randomized block design with 3 factors and 3 replications. The first factor was ameliorant applications (without ameliorant, 10% organic fertilizer, 4% rice husk biochar, 4% rice husk biochar + 10% organic fertilizer). The second factor was PSM applications: without PSM, Burkholderia ambifaria (BPF) inoculants, and Aspergillus niger (FPF) inoculants. The third factor was P fertilizers applications (without Phosphate Rock (PR), 100, 200, and 400 mg P/kg of PR, and 400 mg P/kg of SP-36). The results showed that the applications of 4% rice husk biochar + 10% organic fertilizer + BPF or FPF inoculants increase the number of leaves by 77.9% and 69.2%, respectively, and increase the dry weight of shoot by 93.6 % and 101.9%, respectively. Phosphate rock application in media without organic fertilizer increases dry weight of shoots and roots of cacao seedlings, and the uptake of P, Ca, and Mg in shoots linearly in line with the increase of PR dose to 400 mg P/kg. Application of rice husk biochar significantly increased the acid phosphatase activity of growing media. Meanwhile, organic fertilizer increased the soil pH, acid phosphatase and available P activity, and decreased Al-dd growing media.</em>

scholarly journals MEDIA ROOT TRAINER MENGANDUNG COCOPEAT DAN GAMBUT MENDUKUNG PERTUMBUHAN DAN KUALITAS AKAR BATANG BAWAH KARET / Root Trainer Media Containing Cocopeat and Peat to Support Growth and Quality of Rubber Rootstock Roots

2020 ◽  
Vol 26 (1) ◽  
pp. 23
Author(s):  
Nur Eko Prasetyo ◽  
Budi Setyawan ◽  
Samijan Samijan ◽  
Nofitri Dewi Rinojati ◽  
Sumarmadji Sumarmadji
Keyword(s):  
Plant Growth ◽  
Block Design ◽  
Chemical Properties ◽  
Dry Weight ◽  
Organic Content ◽  
Exchange Capacity ◽  
Duncan Multiple Range Test ◽  
Randomized Block Design ◽  
Physical And Chemical ◽  
Range Test

<p>The physical and chemical properties of the growing medium for <em>root trainer</em> of rubber are critical to support plant growth. This study aimed to obtain the best medium for growing rootstock rubber seedlings in the <em>root trainer</em>.  Rubber clone PR 300 seeds were germinated for 21 days, then raised in <em>root trainer</em> pots for five months. The treatments evaluated were a mixture of <em>cocopeat</em>, Rawapening peat, and manure at different ratios.  The experiment was designed in a Randomized Block Design, three replications, 30 plants per replicate, totaling 720 plants. The observed variables were N, P, K, Mg, C-organic content, pH, and cation exchange capacity of <em>cocopeat</em>, peat, and manure, as well as plant growth (height, stem diameter, wet weight, and dry weight). ANOVA used for analyzing data, followed with the <em>Duncan Multiple Range Test</em> at 5% level. The results showed that there were three best <em>root trainer</em> media for PR 300 rubber rootstock seedlings were a mixture of <em>cocopeat</em> + peat (1:1), <em>cocopeat</em> + peat + manure (1:2:1), and <em>cocopeat</em> + peat + manure (2:1:1). The growth and compactness of the roots are outstanding, so the seedlings are easily removed from the <em>root </em><em>trainer</em> pots without significant damage. Based on the initiation and cost, the best <em>root trainer</em> medium is a mixture of <em>cocopeat</em> + peat + manure (1: 2:1). It is necessary to study the use of other types of peat soils apart from Rawapening. Also, it needs to be observed further plant growth after inoculation with the stem and after planting in the field.</p><p><strong>Keywords </strong>: Planting medium, Rawapening peat, rubber clone PR 300.<em></em></p><p><em><br /></em></p><p><strong>Abstrak<br /></strong></p><p>Sifat fisik dan kimia media tanam di dalam wadah <em>root trainer</em> bibit karet sangat penting untuk mendukung pertumbuhan tanaman. Penelitian ini bertujuan mendapatkan media terbaik untuk pertumbuhan bibit batang bawah karet di dalam <em>root trainer</em>.  Benih klon karet PR 300 dikecambahkan selama 21 hari pada bedeng pengecambahan kemudian dipindah-tanam dan dibesarkan selama 5 bulan dalam pot <em>root trainer</em>. Perlakuannya yaitu campuran <em>cocopeat</em>, gambut Rawapening, dan pupuk kandang (pukan) pada berbagai ratio, dan kontrol. Penelitian dirancang secara Acak Kelompok, tiga ulangan, masing-masing 30 tanaman, sehingga totalnya 720 tanaman. Variabel yang diamati yaitu kandungan N, P, K, Mg, C-organik, pH, dan kapasitas tukar kation dari <em>cocopeat</em>, gambut, dan pupuk kandang, serta pertumbuhan tanaman (tinggi, diameter batang, bobot segar, dan bobot kering). Data dianalisis dengan ANOVA, kemudian <em>Duncan Multiple Range Test</em> pada taraf 5%. Hasil penelitian menunjukkan bahwa ada tiga macam media <em>root trainer</em> terbaik untuk bibit batang bawah karet klon PR 300 yaitu campuran <em>cocopeat </em>+ gambut (1:1), <em>cocopeat </em>+ gambut + pukan (1:2:1), dan <em>cocopeat </em>+ gambut + pukan (2:1:1). Pertumbuhan dan kekompakan akar sangat baik sehingga bibit mudah dilepas dari <em>root tainer</em> tanpa kerusakan berarti. Berdasarkan kepraktisan dan biaya maka media <em>root trainer</em> terbaik adalah campuran media <em>cocopeat </em>+ gambut + pukan (1:2:1). Perlu dilakukan kajian mengenai pemanfaatan tanah gambut jenis lainnya selain dari Rawapening. Selain itu, juga perlu diamati lebih lanjut pertumbuhan tanaman setelah diokulasi dengan batang atas maupun setelah ditanam di lapangan.</p><p><strong>Kata kunci </strong>: Gambut Rawapening, klon karet PR 300, media tanam.</p>

scholarly journals Comparación de genotipos de frijol negro opaco en suelos ácidos del sur de Veracruz

2020 ◽  
Vol 38 (1) ◽  
pp. 91
Author(s):  
Oscar Hugo Tosquy-Valle ◽  
Rigoberto Zetina-Lezama ◽  
Ernesto López-Salinas ◽  
Francisco Javier Ibarra-Pérez ◽  
Bernardo Villar-Sánchez ◽  
...  
Keyword(s):  
Soil Acidity ◽  
Acid Soil ◽  
Block Design ◽  
Geometric Mean ◽  
Winter Season ◽  
Yield Component ◽  
High Yield ◽  
Soil Conditions ◽  
Breeding Lines ◽  
Black Bean

In southern Veracruz, Mexico, soil acidity is one of the main environmental factors that reduce the production yield of common bean. The objectives of this research were to identify outstanding opaque black bean breeding lines according to their level of adaptation to acid soils and high yield eff iciency with and without the addition of dolomite into the soil, as well as to determine which is the yield component that associates the most to a greater production of beans. During the Fall/Winter season of 2016-17 two trials were performed in Juan Rodríguez Clara, Veracruz, in a land with a soil of initial pH = 4.67. One trial was conducted under stress conditions by soil acidity and the other with 2.58 Mg ha-1 of dolomite, applied to the soil 27 d before sowing. Twelve black bean breeding lines were evaluated and compared to Negro Grijalva and Negro Comapa bean varieties. All beans were arranged in a randomized complete block design with three replicates. The variables measured were dry matter production without grain, weight of 100 seeds, number of pods per plant and grain yield. An analysis of variance of the quantif ied variables and the least signif icant difference (LSD, 0.05) tests for separation of means were performed. Negro Citlali/XRAV-187-3-1-8 showed the best adaptation to acid soil conditions in southern Veracruz, which obtained yields of 911.0 and 706.3 kg ha-1 with and without dolomite, respectively. These values were signif icantly higher than the commercial beans. This breeding line also showed the highest productive eff iciency, since it obtained the highest geometric mean (MGi) values (802.1) and a relative eff iciency index (IERi) of 2.00. Under both conditions of edaphic acidity, the number of pods per plant was the only plant trait that was positively related to seed yield (r = 0.91 ** and 0.87 **, with and without dolomite).

scholarly journals The Effect of Ammonium Nitrate Ratio and Support Types on the NPK Uptake and Growth of Black Pepper (Piper nigrum L.) in Field Conditions

Poljoprivreda ◽  
2021 ◽  
Vol 27 (2) ◽  
pp. 25-33
Author(s):  
Issukindarsyah Issukindarsyah ◽  
◽  
Endang Sulistyaningsih ◽  
DidikIndradewa Indradewa ◽  
Eka Tarwaca Susila Putra
Keyword(s):  
Plant Growth ◽  
Block Design ◽  
Dry Weight ◽  
Black Pepper ◽  
N Fertilizer ◽  
Field Conditions ◽  
Piper Nigrum ◽  
Pepper Plant ◽  
Randomized Block Design ◽  
Npk Uptake

The study’s objective was to determine the effect of the NO3-: NH4+ratio and types of support on NPK uptake and pepper plant growth in field conditions. The study used a completely randomized block design with three replications. The first factor was the type of support, being the deadwood and living supports in the form of Gliricidia sp. and Ceiba pentandra. The second factor was the ratio of N fertilizer forms, which were 100% NO3-, 100% NH4+, 50% NO3-:50% NH4+, 75% NO3-:25% NH4+ and 25% NO3-:75% NH4+. The results have demonstrated that the uptake of N, P, and K, as well as the plant growth, were not affected by the interaction of the N fertilizer form ratio with the types of support. In field conditions, the black pepper prefers the N fertilizer in the form of 50% NO3-:50% NH4+. The pepper plants that were given N fertilizer in a combination of 50% NO3-:50% NH4+ have demonstrated an N, P, and K uptake, and morphology and plant dry weight were higher than the ratio of other forms of N fertilizers.

scholarly journals EFFECTS OF MYCORRHIZAE, MEDIA AND CONTAINER TYPE ON THE GROWTH OF GREEN PEPPER AND LETTUCE TRANSPLANTS

HortScience ◽  
1991 ◽  
Vol 26 (6) ◽  
pp. 709B-709 ◽  
Author(s):  
Ray A. Watson ◽  
Katrine A. Stewart ◽  
Valentin Furlan
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Block Design ◽  
Dry Weight ◽  
The Other ◽  
Fresh Weight ◽  
Green Pepper ◽  
Shoot Dry Weight ◽  
Randomized Complete Block Design ◽  
Container Type

The effects of two mycorrhizal species (Glomus versiforme and Glomus intraradix) and a control on the growth of green pepper, Capsicum annuum, and lettuce, Lactuca sativa, seedlings have been evaluated using four types of growing media (Peatwool, Fafard bulk mix. Cornell mix and a compost based mix) and two types of containers, Cell Packs (125 cc volume) and Pro-Trays (65 cc volume) for green pepper and Cell Packs (125 cc volume) and Plug Flats (33 cc volume) for lettuce. The experiments were split plot randomized Complete block design with 6 blocks (lettuce) and 4 blocks (pepper). Seeds were sown directly into the containers of mycorrhizal inoculated media. All treatments received the same fertilizer regime. Cell volume had no significant effects on green pepper fresh weight, dry weight, stem diameter, leaf area or leaf number but the lettuce Cell Pack plants had significantly higher fresh and dry weights, more leaves and higher leaf area. The Fafard Bulk and the Compost mix gave significantly higher fresh and dry weights than did the other two media for both green pepper and lettuce. Mycorrhizal species did not influence plant growth with the exception of leaf area in green peppers and shoot dry weight in lettuce.

scholarly journals Growth and yield performance of okra genotypes in acidic soil at Sylhet Region, Bangladesh

2020 ◽  
Vol 5 (3) ◽  
pp. 283-291
Author(s):  
M. Rahman ◽  
A.F.M.S. Islam ◽  
M. Hasan ◽  
M. Uddin
Keyword(s):  
Acid Soil ◽  
Block Design ◽  
Acidic Soil ◽  
Growth And Yield ◽  
Soil Conditions ◽  
Cropping Pattern ◽  
Yield Performance ◽  
Yield Attributes ◽  
Sylhet Region ◽  
Final Harvest

A field experiment was conducted at the field laboratory of Department of Crop Botany and Tea Production Technology, Sylhet Agricultural University from August 2016 to January 2017 to select the best suited okra genotype(s) considering growth and yield performance among eleven genotypes viz. BARI Dherosh−1 (control) and 10 exotic (Japanese okra) cultivable in acidic soil conditions. All okra genotypes were evaluated in relation to morphological characteristics and yield performance at defined area of study. The treatment combinations were laid out in a Randomized Complete Block Design (RCBD) with three replications. In almost all parameters, significant variations were observed. Experimental findings revealed that BARI Dherosh−1, JO−2, JO−6 and JO−10 showed excellent performance in germination capacity. The high yielding genotype BARI Dherosh−1 exhibited taller plant at final harvest. Early flowers, individual fruit weight with maximum number of flowers and fruits plant-1 was observed in JO−6. The genotype JO−3 produced the highest number of branches, internodes and leaves at final harvest. The flowering duration was long in the genotype JO−2. The highest fruit setting (%) was observed in JO−1. The longest fruit length and the lowest number of aborted fruits were observed in JO−5 whereas BARI Dherosh−1 showed the largest fruit diameter at 9 DAF and heaviest hundred seed weight. The highest fruit fresh weight observed in JO−4 and the highest fruit dry weight observed in JO−5 at 9 DAF.  Regarding fruit yield, the genotype JO−6, JO−10 and JO−3 performed better. The genotypes JO−6 and JO−10 were found to be promising genotypes in acid soil considering the morphological features and yield attributes. Since the variety of our research is suitable for Sylhet region acid soil, if our variety is combined with Sylhet’s cropping pattern cropping intensity will be increase, which will benefit the farmer financially and meet the nutritional needs.

scholarly journals APPLICATION OF Trichoderma spp. AND LIGNOHUMATE TO SUPPRESS A PATHOGEN OF CLUBROOT (Plasmodiophora brassicae WOR.) AND PROMOTE PLANT GROWTH OF CABBAGE

2019 ◽  
Vol 6 (2) ◽  
pp. 79
Author(s):  
I Ketut Suada ◽  
Anak Agung Ngurah Gede Suwastika ◽  
I Kadek Ngestika Pradnyana ◽  
Nataliya Shchegolkova ◽  
Rodion Poloskin ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plasmodiophora Brassicae ◽  
Disease Incidence ◽  
Block Design ◽  
Economic Value ◽  
Dry Weight ◽  
Trichoderma Spp ◽  
Population Number ◽  
Bacteria Growth ◽  
Root Dry Weight

The high economic value of cabbage crop leads farmers to make various efforts to suppress the pathogen of club root which is detrimental to plants. Efforts that need to be put forward must be environmentally safe. One way that is environmentally friendly is to control a pathogen biologically using antagonistic microbes. Therefore, the use of microbes such as Trichoderma which has been widely studied is important because it was able to suppress clubroot incidence and stimulate plant growth as well. Meanwhile, the need for plant nutrients to maximize plant growth requires an input of organic materials such as lignohumate which preserve soil nutrients, improve soil structure and increase plant resistance to biotic and abiotic stresses. The previous study on this scheme found an effective indigenous Trichoderma to suppress clubroot, therefore it is used in the current study. The objective of this study was to find out a combination treatment of Trichoderma and lignohumate which can suppress clubroot and increase plant growth. This experiment used a Randomized Block Design with 2 factors and 3 replications. Trichoderma concentration consisted of 3 levels, namely 0 spores (control), 1x106 spores. 2x106 spores, and 3x106 spores per plant which were suspended in 150 ml of water. The lignohumate treatments were 0.01, 0.02, 0.05, 0.1, 0.5, 1.0, and 2%. The results showed that lignohumate treatment was interact with Trichoderma population number on disease incidence, total clubroot, root dry weight, but not to canopy dry weight. The most suitable combination of treatments was the Trichoderma population of 3x106 spores (15 g) in combination to lignohumate of 0.5%.  This combination resulted in the lowest disease incidence, the lowest total clubroot, root dry weight, and the highest canopy dry weight. The higher the lignohumate concentration up to 0.5%, the higher the number of microbes (fungi and bacteria) growth, howeverit decreased above the concentration of 0.5%.

scholarly journals Comparison of an Antitranspirant Spray, a Polyacrylamide Gel, and Wind Protection on Early Growth of Muskmelon

HortScience ◽  
2006 ◽  
Vol 41 (2) ◽  
pp. 361-366 ◽  
Author(s):  
Laurie Hodges ◽  
Entin Daningsih ◽  
James R. Brandle
Keyword(s):  
Plant Growth ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Field Experiments ◽  
Block Design ◽  
Dry Weight ◽  
Early Growth ◽  
Polyacrylamide Gel ◽  
Fresh Weight ◽  
Area Index

Field experiments were conducted over 4 years to evaluate the effects of antitranspirant (Folicote, Aquatrol Inc., Paulsboro, N.J.) and polyacrylamide gel (SuperSorb, Aquatrol Inc., Paulsboro, N.J.) on early growth of transplanted muskmelon grown either protected by tree windbreaks or exposed to seasonal winds. A randomized complete block design (RCBD) with split plot arrangement was used with wind protection (sheltered and exposed) areas as the main treatment and use of an antitranspirant spray or gel dip as subtreatments. Based on destructive harvests in the field, treatments and subtreatments did not affect dry weight or leaf area index in the first 2 years. Specific contrasts, however, showed that gel application significantly increased fresh weight, dry weight, and leaf area index over that of the untreated transplants whereas the spray application tended to reduce these factors during the first 3 weeks after transplanting. Significant differences between gel and spray subtreatments disappeared by 5 weeks after transplanting. Shelterbelts ameliorated crop microclimate thereby enhancing plant growth. Significantly, wind velocity at canopy height was reduced 40% on average and soil temperatures were about 4% warmer in the sheltered plots compared to the exposed plots during the first 5 weeks post-transplant. Muskmelon plants in the sheltered areas grew significantly faster than the plants in the exposed areas in 2 of the 3 years reported, with the 3-year average fresh weight increased by 168% due to wind protection. Overall transplanting success and early growth were enhanced the most by wind protection, followed by the polyacrylamide gel root dip, and least by the antitranspirant foliar spray. We conclude that microclimate modification by wind speed reduction can increase early muskmelon plant growth more consistently than the use of polyacrylamide gel as a root dip at transplanting or the use of an antitranspirant spray. A polyacrylamide gel root dip generally will provide more benefit during early muskmelon growth than the use of an antitranspirant spray.

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