Ex-ante evaluation of integrated crop management options for irrigated rice production in the Senegal River Valley

2003 ◽  
Vol 81 (2-3) ◽  
pp. 87-94 ◽  
Author(s):  
Mohamed Kebbeh ◽  
Kouamé M Miezan
2012 ◽  
Vol 109 ◽  
pp. 101-112 ◽  
Author(s):  
Timothy J. Krupnik ◽  
Carol Shennan ◽  
William H. Settle ◽  
Matty Demont ◽  
Alassane B. Ndiaye ◽  
...  

2019 ◽  
Vol 14 (1) ◽  
pp. 19-25
Author(s):  
Koffi Djaman ◽  
Daran R. Rudnick ◽  
Yonnelle D. Moukoumbi ◽  
Abdoulaye Sow ◽  
Suat Irmak

Lowland irrigated rice is the predominant crop produced in the Senegal River Valley characterised by very low annual rainfall, high temperatures, and low relative humidity. The Senegal River is shared by Senegal, Mali, Mauritania, and Guinea, and serves as the main source of irrigation water for the adopted double rice cropping system. Developing appropriate resource management strategies might be the key factor for the sustainability of rice production in the region. This study aims to estimate rice seasonal evapotranspiration (ETa), irrigation water requirement, and to develop rice growth stage specific crop coefficients (Kc) to improve rice water productivity. Field experiments were conducted during the hot and dry seasons in 2014 and 2015 at the AfricaRice research station at Fanaye in Senegal. Irrigation water inputs were monitored and actual crop evapotranspiration was derived using the water balance method. Daily reference evapotranspiration (ETo) was estimated using the Penman-Monteith equation and the weather variables were collected at the site by an automated weather station. The results showed that the ETo during the hot and dry season from February 15th to June 30th varied from 4.5 to 9.9 mm and from 3.7 to 10.8 mm in 2014 and 2015, respectively, and averaged 6.8 mm d–1 in 2014 and 6.6 mm d–1 in 2015. The seasonal irrigation water amount for the transplanted rice was 1110 mm in 2014 and 1095 mm in 2015. Rice daily ETa varied from 4.7 to 10.5 mm in 2014 and from 4.4 to 10.5 mm in 2015 and averaged 8.17 mm in 2014 and 8.14 mm in 2015. Rice seasonal ETa was 841.5 mm in 2014 and 855.4 mm in 2015. The derived rice Kc values varied from 0.77 to 1.51 in 2014 and 0.85 to 1.50 in 2015. Rice Kc values averaged 1.01, 1.31, and 1.12 for the crop development, mid-season and late season growth stages, respectively. The Kc values developed in this study could be used for water management under rice production during the hot and dry season in the Senegal River Valley.


Food Security ◽  
2012 ◽  
Vol 5 (1) ◽  
pp. 55-68 ◽  
Author(s):  
Mandiaye Diagne ◽  
Matty Demont ◽  
Papa Abdoulaye Seck ◽  
Adama Diaw

Author(s):  
Budi Winarto ◽  
Sodiq Jauhari

<p><strong>Morphology Performances and Yield of New Superior</strong><strong> Rice Variety with Integrated Crop Management in Rainfedland Jepara District</strong>. One constraint for increasing rice production in rainfedland Jepara District is the availability of adaptive improved rice varieties with high yield. The purpose of this assessment are: (1) to analyze the morphological performance and yield potential of some new superior varieties in rainfedland Jepara District (2) to assess the level of main rice pest and diseases attack and the presence of natural pest’s enemies, and (3) to assess the responses and perceptions of farmers towards integrated crop management applications in rice production. The assessment was conducted in ranfedland Mayong Kidul Village, Mayong Sub-district, Jepara District by involving Lestari Farmer’s Group on the second planting season of 2015. The assessment also employed A Randomized Block Design with three replications and rice variety as treament: Inpari-30, Inpari-31, Inpari-10, Conde, mekongga and varietas Ciherang as the control variety.  The collected data of morphology and rice yield were analyzed using analysis of variance,  then the mean difference values between treatments was further tested using the least significant difference test at p = 0.05. The results showed that there were influences of rice varieties on plant height, number of tillers, pests and diseaces as well as yield and yield component of the five rice varieties. The Mekongga variety is the most suitable rice variety that could be used in rainfedland in order to improve rice productivity in rainfedland of Jepara District. This variety could produce dry rice grain up to 6.8 tons/ha, with 105.5 cm plant height, 14.1 productive tillers, 23.7 cm panicle length 566 and 176 number of filled and empty grains 5 panicles respectively, 4.5 pest and diceases attack level, and is able to increase grain yield up to 30.7% compared to that of control variety. Respondent farmers have a positive perception to the concept of integrated crop management with a value of 68.3%. The implication of these results is that the utilization of new superior rice varieties especially Mekongga have a high potential for improving rice productivity in rainfedland of Jepara District. <em></em></p><p> <strong>Keywords</strong>: <em>New Superior Rice Varieties,</em><em> rainfedland, ICM, Jepara</em></p><p align="center"><strong> </strong></p><p align="center"><strong>ABSTRAK</strong></p><p align="center"><strong> </strong></p><p>Keragaan Morfologi dan Hasil Varietas Unggul Baru Padi dengan Pengelolaan Tanaman Terpadu di Kabupaten Jepara.  Salah satu kendala peningkatan produktivitas padi di lahan sawah tadah hujan Kabupaten Jepara adalah ketersediaan varietas unggul yang adaptif dengan produktivitas tinggi. Tujuan pengkajian ini adalah (1) mengkaji keragaan morfologi dan potensi hasil beberapa VUB padi di lahan sawah tadah hujan (2) mengkaji tingkat serangan hama dan penyakit utama padi serta keberadaan musuh alami hama, dan (3) mengkaji respon dan persepsi petani terhadap penerapan PTT padi. Pengkajian dilakukan di lahan sawah tadah hujan Desa Mayong Kidul Kecamatan Mayong Kabupaten Jepara, Kelompok Tani Lestari pada musim tanam ke-2 tahun 2015<em>. </em>Pengkajian ini menggunakan Rancangan Acak Kelompok dengan tiga ulangan dan sebagai perlakuan adalah varietas padi: Inpari-30, Inpari-31, Inpari-10, Conde dan mekongga serta varietas Ciherang sebagai pembanding. Data yang terkumpul dianalisis menggunakan analisis varian (anova), selanjutnya perbedaan nilai tengah antar perlakuan diuji lanjut menggunakan uji beda nyata terkecil (BNT) pada p=0.05. Hasil pengkajian menunjukkan bahwa terdapat pengaruh nyata varietas padi terhadap tinggi tanaman, jumlah anakan, perkembangan OPT, hasil dan komponen hasil gabah dari kelima varietas tanaman padi yang diuji. Varietas Mekongga merupakan VUB padi yang paling sesuai ditanam di lokasi pengkajian dalam rangka meningkatkan produktivitas padi. Varietas ini menghasilkan gabah kering giling hingga 6.8 ton/ha, tinggi tanaman 105.5 cm, jumlah anakan produktif 14.1, panjang malai  23.7 cm, jumlah gabah bernas 566 butir  per 5 malai, jumlah gabah hampa 176 gabah hampa per 5 malai dan tingkat serangan OPT 4,5%, serta  mampu meningkatkan hasil gabah hingga 30.7% dibanding kontrol. Petani juga memiliki persepsi positif terhadap konsep PTT dengan nilai mencapai 68.3%. Implikasi hasil kajian ini adalah pemanfaatan VUB padi terutama Mekongga memiliki potensi tinggi dalam meningkatkan produktivitas padi di lahan sawah tadah hujan Kabupaten Jepara.</p><p><strong> </strong><strong>Kata kunci</strong>: <em>VUB padi, tadah hujan, PTT, Jepara</em></p><p> </p>


2015 ◽  
Vol 34 (2) ◽  
pp. 131
Author(s):  
Suharyanto Suharyanto ◽  
Jangkung H. Mulyo ◽  
Dwidjono H. Darwanto ◽  
Sri Widodo

<p>The integrated crop management approach on rice is aimed to increase the productivity on fields with the constraint of limited land area. This present research was aimed to analyze<br />the impact of the implementation of integrated crop management to grain yield and its efficiency on the lowland farming. The study was conducted in three districts representing the lowland rice production center in Bali, i.e. Tabanan, Buleleng and Gianyar, involving 216 respondents, over two cropping seasons. Sampling of the respondents was using stratified simple random method. Data were analyzed using a stochastic frontier production function with the Maximum Likelihood Estimation (MLE) method. The results showed that the aggregate of rice production was affected by land area, amount of seeds, N fertilizer, organic fertilizer, pesticides, labor and age of seedling. Rice yield was higher in the dry season applying legowo planting pattern, followed by intermittent irrigations, IPM and planting varieties other than IR64. Technically, both ICMFS alumni farmers and non ICM-FS alumni were considered efficient, with an efficiency rate of more than 70 percent, but only<br />ICM-FS alumni farmers allocated the inputs efficiently, and therefore economically move efficient. Socio economic factors which were significantly affected the aggregate technical<br />inefficiencies were age of farmers, level of education, farming experiences, and the number of land plots. Technical inefficiency of the lowland rice farming was lower when ICM-FS alumni farmers work on their own lands.</p>


1998 ◽  
Vol 46 (1) ◽  
pp. 97-107
Author(s):  
M.C.S. Wopereis ◽  
J. Ceuppens ◽  
P. Boivin ◽  
A.M. Ndiaye ◽  
A. Kane

Soil quality under irrigation in the Senegal River Valley may become affected by salinization (Delta) and alkalinization (Middle Valley) processes. The salinity status of 158 irrigated rice fields in the Delta was measured with an electromagnetic conductivity meter. Double-cropped fields (two rice crops per year on the same field) were least saline (average horizontal reading: 0.6 dS/m), followed by single-cropped drained fields (1.6 dS/m), single-cropped non-drained fields (2.5 dS/m), non-cropped sites outside irrigation schemes (4.7 dS/m) and abandoned fields (5.7 dS/m). Results illustrated that when cultivating rice in the delta, the ponded water on the soil surface blocks capillary rise of salt from the water table. In the valley, the difference in the total amount of carbonates in 1:50 soil extracts between cultivated and non-cultivated sites was used as an indicator for alkalinization risk in 27 irrigation schemes. Highest rates of carbonate accumulation (0.65 meq HCO3-/(kg soil) per cropping season) and, therefore, greatest soil degradation risk were observed in schemes without drainage, compared to 0.10 meq HCO3-/(kg soil) per cropping season in schemes with good irrigation and drainage facilities. Plot and scheme level recommendations that may preserve soil quality under irrigation are presented.


2007 ◽  
Vol 39 (1-2) ◽  
pp. 202-206 ◽  
Author(s):  
B. V. Bado ◽  
M. E. De Vries ◽  
S. M. Haefele ◽  
M. C. S. Marco ◽  
M. K. Ndiaye

2003 ◽  
Vol 19 (2) ◽  
pp. 341-356 ◽  
Author(s):  
J.C Poussin ◽  
M.C.S Wopereis ◽  
D Debouzie ◽  
J.L Maeght

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