Computer vision and camera sensors are hopeful technologies for capturing information and processing to facilitate autonomous cultivation with machine learning. Nowadays, field robots are widely utilized, which autonomously navigates in fields tasks for advanced developments. However, manual activities are also required for certain needs, for instance, controlling weed in organic carrot farming is carried out manually and it is essential to evade considerable crop yield loss. This paper makes an attempt to introduce a new automatic crop/weed classification under three major phases: (i) Pre-processing (ii) Feature Extraction and (iii) Classification. Initially, the images are converted to greyscale images under pre-processing stage. Further, from the pre-processed image, the features like "Grey Level Co-occurrence Matrix (GLCM) and Grey Level Runlength Matrix (GLRM) based texture features" are extracted. Finally, the classification is done by the hybrid classifiers, where both the Deep Convolutional Neural Network (DCNN) and Neural Network (NN) is incorporated. Finally, both the classified outputs are ORed to get the final classification output. Moreover, in order to enhance the performance of proposed work, it is planned to tune the hidden neurons of NN optimally via a new improved Moth Search Algorithm (MSA) and is named as Moth Search with newStep Length evaluation (MS-SL). Finally, the performance of proposed work is evaluated over other state-of-the-art models with respect to certain performance measures.