Monitoring Changes in the Cultivation of Pigeonpea and Groundnut in Malawi Using Time Series Satellite Imagery for Sustainable Food Systems. - Murali Krishna Gumma; Takuji W. Tsusaka; Irshad A. Mohammed; Geoffrey Chavula; N. V. P. R. Ganga Rao; Patrick Okori; Christopher O. Ojiewo; Rajeev K. Varshney; Moses Siambi; Anthony M. Whitbread (Remote. Sens., 2019)